STORAGE · YOUR NEXT FACE-OFF

Seagate IronWolf Pro vs Toshiba N300

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

Seagate IronWolf Pro

12 TB · 3.5-inch · SATA · 7200 RPM · CMR · ST12000NT001

Full product profile Official image

Exact model & source notes

Seagate's 12 TB IronWolf Pro NAS hard drive (ST12000NT001): a helium-filled 7200 RPM CMR drive with a 550 TB/year workload rating and a five-year limited warranty. Seagate's data sheet and its product manual give different cache (256 MB vs 512 MB) and maximum sustained transfer figures (270 MB/s vs 272/285 MB/s) for this model.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHAT DIFFERS

12,000 GBCapacity8,000 GB

5 yearsLimited warranty time3 years

MTBF2,500,000 hours1,000,000 hours (MTTF)

3 of 8 verified differences, in the order listed below. Not a rating.

See the 8 verified differences

THE CONTENDER

Toshiba N300

8 TB · EMEA retail kit · HDWG780EZSTA

Full product profile Official image

Exact model & source notes

The 8 TB N300 is Toshiba's NAS drive for 24/7 operation; Toshiba reserves helium sealing for the 12 TB to 22 TB models. It is rated for NAS enclosures of up to eight bays (Toshiba's bulk 14 TB to 22 TB models: up to 12), with a 180 TB/year workload, a 512 MB buffer, CMR recording and a three-year limited warranty, and uses Toshiba NASLink firmware, Dynamic Cache Technology, error recovery control and temperature control.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

Seagate IronWolf Pro UK & US retailers

UK & US price history: no verified listing yet

Toshiba N300 UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

SPECIFICATIONS SIDE BY SIDE7 topics

SELECTED TOPIC

01 / 07

Storage capacity

Decimal storage capacity: 1 TB = 1,000 GB. Formatting and system use reduce available space.

Seagate IronWolf Pro12 TB

Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.

Source 1 Source 2

Toshiba N3008 TB

Source 1 Source 2

Explore the full specifications

Check the connection before the capacity. M.2 NVMe modules and 2.5-inch SATA drives are not interchangeable. Check the host’s protocol, slot or bay, power connection and clearance. Rated speeds use different test systems; we do not turn them into a speed score or overall winner.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

8 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.

Capacity

In Visual facts

Seagate IronWolf Pro12000 GB

Toshiba N3008000 GB

Sources

Seagate IronWolf Pro

Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions.

Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

Limited warranty time

In Visual facts

Seagate IronWolf Pro5 years

Toshiba N3003 years

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

Rated performance and conditions

In Visual facts

Seagate IronWolf Pro7200 RPM

Toshiba N300Up to 281 MB/s maximum sustained data transfer rate (typical); 7,200 rpm

Sources

Seagate IronWolf Pro

Manufacturer specification · Only the spindle speed is recorded here: both Seagate documents give 7200 RPM. The data sheet and the product manual disagree on the maximum sustained transfer rate (data sheet 270MB/s at the outer diameter; manual 272 MB/s max sustained OD in Table 2 and 285 MB/s sustained max in Table 4) and on cache (data sheet 256MB; manual 512MB); those figures are recorded as explicit conflicts in the max_sustained_transfer and cache fields, not as a value here. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors. Not our measurement.

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page

Toshiba N300

Manufacturer specification · Toshiba 'Max. data transfer speed (sustained MB/s Typ.)' on the 8 TB datasheet page.

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Warranty terms and endurance if applicable

In Visual facts

Seagate IronWolf Pro5-year limited warranty; rated workload 550 TB/year; 3 years of Rescue Data Recovery Services included

Toshiba N3003-year limited warranty; rated workload up to 180 TB/year

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate states Rescue Data Recovery Services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate.

Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification · 8 TB datasheet page: 'Limited warranty (years) 3' and 'Workloads (TB/year) 180'. Toshiba does not state how the workload rating relates to the warranty terms.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

MTBF

In Visual facts

Seagate IronWolf Pro2,500,000 hours

Toshiba N3001,000,000 hours (MTTF)

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate-rated mean time between failures, data sheet 'Mean Time Between Failures (MTBF, hours)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification · Toshiba states MTTF (hours). The 8 TB datasheet page gives 1,000,000; the 12 TB and larger datasheet pages give 1,200,000, and the product page says the 12 TB to 22 TB models use a helium-sealed design.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

Non-operating shock rating

In Visual facts

Seagate IronWolf Pro200 G; 1 ms and 2 ms

Toshiba N3002,450 m/s² {250 G} (2 ms)

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate 'Shock, Nonoperating, 1ms and 2ms (Gs)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

Show 2 more verified differences

Non-operating temperature

In Visual facts

Seagate IronWolf Pro-40 °C to 70 °C (ambient)

Toshiba N300-40–70 °C

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Check the exact configuration and source conditions for your use.

Drive dimensions

Seagate IronWolf Pro26.11 mm high × 101.85 mm wide × 146.99 mm deep (1.028 in × 4.01 in × 5.787 in)

Toshiba N300147 (L) × 101.85 (W) × 26.1 (H) mm

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate lists height, maximum width and maximum depth. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001).

Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification · Bare drive, no heatsink or enclosure. Taken from the datasheet page headed 'NAS Hard Drive – 8 TB', Retail Number HDWG780EZSTA.

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

A size or weight trade-off; it does not establish the better product.

Missing or non-comparable evidence (25)

Cache

Seagate IronWolf ProConflicting evidence

Toshiba N300512 MB

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives a 256 MB cache; product manual 206815300 Rev B gives a 512 MB cache buffer. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Cache (MB)' 256MB for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Cache buffer' 512MB, a single value spanning all four model columns including ST12000NT001; its key-features list also says '512MB data buffer' and '512MB cache buffer'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

Manufacturer specification · The product page lists '512 MB / 1024 MB' across the range; the 8 TB datasheet page gives 512 MB.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Acoustics

Seagate IronWolf ProConflicting evidence

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001 acoustics: data sheet DS2129.4-2311US gives 20 dBA idle and 26 dBA seek (typical); product manual 206815300 Rev B gives A-weighted sound power of 2.8 bels idle and 3.2 bels performance seek (typical). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Acoustics, Idle (typical, measured in Idle 1 state) (dBA)' 20 and 'Acoustics, Seek (typical) (dBA)' 26 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Drive acoustics, sound power (bels)' idle 2.8 (typical) / 3.0 (max) and performance seek 3.2 (typical) / 3.4 (max); Table 18 gives the same for all models; section 2.7 says these are overall A-weighted acoustic sound power levels consistent with ISO 7779. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Each figure is kept in the unit Seagate states (dBA and bels); not converted.

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NAS bays supported

Seagate IronWolf ProNot verified

Toshiba N300Up to 8 bays

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · 8 TB page of the datasheet (retail HDWG780EZSTA, bulk MN10ADA800S). The datasheet gives 'up to 12' only on the bulk-number 14 TB to 22 TB pages (MN11ACA14TS, MN11ACA16TS, MN11ACA18TS, MN11ACA20TS and MN11ACA22TS); the retail 14 TB (HDWG51EEZSTA), 12 TB, 10 TB, 6 TB and 4 TB pages give up to 8.

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Cache technology

Seagate IronWolf ProNot verified

Toshiba N300Toshiba Dynamic Cache Technology

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · Product page: a self-contained cache algorithm with on-board buffer management that optimises cache allocation during read/write. Buffer size is recorded separately.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Error recovery control

Seagate IronWolf ProNot verified

Toshiba N300Yes

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · Listed in the product page feature list and FAQ; Toshiba publishes no timeout values.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Interface speeds supported

Seagate IronWolf Pro6.0, 3.0 and 1.5 Gb/s SATA

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Load/unload cycles

Seagate IronWolf Pro600,000

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification · Product manual Table 2 'Load-unload cycles' (a single value for the 24/20/16/12TB models the manual covers) and section 2.9 '600,000 cycles'; the data sheet has no load/unload row. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Max sustained transfer rate (OD)

Seagate IronWolf ProConflicting evidence

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001's maximum sustained transfer rate: data sheet DS2129.4-2311US gives 270 MB/s (outer diameter); product manual 206815300 Rev B gives 272 MB/s (max sustained, outer diameter, Table 2) and 285 MB/s (sustained data transfer rate, max, Table 4). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Max. Sustained Transfer Rate OD (MB/s)' 270MB/s for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Max sustained transfer rate OD (MB/s)' 272 and 'Sustained transfer rate OD (MB/s)' 259 (single values spanning all four models); Table 4 'Sustained data transfer rate (MB/s max)' 285 for 24/20/16/12TB. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors.

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Advertised mechanical design

Seagate IronWolf ProNot verified

Toshiba N300Toshiba Stable Platter Technology

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · Listed in the product page feature list; no further detail or measured benefit is given for the N300.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NAS features

Seagate IronWolf ProDrive bays supported: unlimited; AgileArray with dual-plane balancing and time-limited error recovery (TLER); rotational vibration (RV) sensors; IronWolf Health Management

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate says IronWolf Health Management is enabled on all leading NAS systems and to check with the NAS vendor or a Seagate sales representative. Seagate states IronWolf drives have been tested by leading NAS providers such as Asustor, QNAP and UGREEN for compatibility, and recommends reviewing the NAS vendor's compatibility list for the latest approved drive. The rotational vibration rating is recorded separately (vibration_rotational) because Seagate's data sheet and product manual state it with different frequency ranges and units.

Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 12 TB (ST12000NT001) — official UK product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NAS firmware technology

Seagate IronWolf ProNot verified

Toshiba N300Toshiba NASLink Technology

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · Toshiba: firmware that fine-tunes HDD behaviour for rapid data access and boosts RAID performance through optimised disk coordination. No measured benefit is published.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Operating temperature

Seagate IronWolf ProConflicting evidence

Toshiba N3005–60 °C

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 0 °C ambient minimum to 65 °C drive-reported maximum; product manual 206815300 Rev B gives 5 °C to 65 °C drive-reported and a maximum allowable drive-reported temperature of 60 °C. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Operating Temperature (ambient, min °C)' 0°C and 'Operating Temperature (drive reported, max °C)' 65°C for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operating temperature 5°C to 65°C (Drive Reported Temperature)'; Table 11 '41°F to 149°F (5°C to 65°C) temperature range ... as reported by the drive' and 'The maximum allowable drive reported temperature is 140°F (60°C).' Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Power

Seagate IronWolf ProConflicting evidence

Toshiba N3009.07 W typical operating; 5.74 W typical active idle; 5 V DC +10 %/-7 % and 12 V DC ±10 % supply

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001 power: data sheet DS2129.4-2311US gives 7.8 W average operating, 5.0 W average idle and 1.0 W standby; product manual 206815300 Rev B gives 8.3–8.98 W typical operating depending on workload, 6.19 W average idle and 1.16 W standby. Both give a 2.0 A typical 12 V startup current. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet (ST12000NT001): average operating 7.8 W; idle average 5.0 W; standby typical 1.0 W; sleep typical 1.0 W; startup current 2.0 A typical (12 V). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 6 'DC power requirements (24/20/16/12TB models)' (typical measurements based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 35°C ambient): Avg Idle 6.19 W; Standby 1.16 W; typical DC operating 8.98 W (random read 4K16Q), 8.75 W (random write 4K16Q), 8.3 W (sequential read 64K16Q), 8.58 W (sequential write 64K16Q). Manual Table 2: startup current (typical) 12V (peak) 2.0A. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Recording technology

Seagate IronWolf ProCMR (conventional magnetic recording)

Toshiba N300CMR

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.

Sector size

Seagate IronWolf Pro512E (512-byte emulation)

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Operating shock rating

Seagate IronWolf ProConflicting evidence

Toshiba N300686 m/s² {70 G} (2 ms)

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 50/50 G (read/write, 2 ms) operating shock; product manual 206815300 Rev B gives 40 g (2 ms, typical, limited by Z-axis). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Shock, Operating 2ms (Read/Write) (Gs)' 50/50Gs for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operational Shock (2 ms) 40 g' (all four models); Table 14 'intermittent shock pulses not exceeding 40 g typical at a 2ms duration limited by Z-axis'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Power supply requirements

Seagate IronWolf Pro+12 V and +5 V; tolerance including noise 5 V ± 5%, 12 V ± 10%

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification · Data sheet 'Power Supply Requirements' row: +12 V and +5 V (no tolerance listed). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 2: 'Voltage tolerance (including noise)' 5V ± 5% and 12V ± 10%, given as a single value for the 24/20/16/12TB models the manual covers; section 2.5.3 adds peak-to-peak noise limits. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Advertised thermal design

Seagate IronWolf ProNot verified

Toshiba N300Temperature control: automatic seek-speed adjustment to reduce heat during high-temperature operation

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · Product page feature list ('Temperature control') and 'High durability and heat prevention' section.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Unrecoverable error rate

Seagate IronWolf ProNot verified

Toshiba N3001 per 10^15

Sources

Seagate IronWolf Pro

No source recorded for this side.

Toshiba N300

Manufacturer specification · 8 TB datasheet page. The product page's range-wide table lists '1 per 10^14 bits read / 1 per 10^15 bits read' across capacities.

Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Nonrecoverable read errors (max)

Seagate IronWolf Pro1 per 10E15 bits read

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Non-operating vibration rating

Seagate IronWolf ProConflicting evidence

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Seagate's official documents agree on 2.27 Grms but conflict on the frequency range for ST12000NT001: data sheet DS2129.4-2311US gives 10–500 Hz; product manual 206815300 Rev B gives 2–500 Hz. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Vibration, Nonoperating: 10Hz to 500Hz (Grms)' 2.27 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Linear Random Non-Operating Vibration 2–500 Hz: 2.27 Grms'; Table 17 'PSD Profile 2-500 Hz at 2.27 Grms'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page.

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rotational vibration rating (operating)

Seagate IronWolf ProConflicting evidence

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Seagate's official documents both give 12.5 but conflict on frequency range and unit for ST12000NT001: data sheet DS2129.4-2311US gives 12.5 rad/s at 10–1500 Hz; product manual 206815300 Rev B gives 12.5 rad/s² at 20–1500 Hz (random rotary operating vibration). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Rotational Vibration @ 10-1500 Hz (rad/s)' 12.5 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Random Rotary Operating Vibration 20–1500Hz: 12.5 rads/s²'; Table 16 'PSD OF 20-1500 Hz at 12.5 rad/sec^2'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Workload rate limit

Seagate IronWolf Pro550 TB/year

Toshiba N300180 TB/year

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate workload rate limit (WRL); drives are specified for 8,760 power-on hours per year (24×7).

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

The recorded units or formats differ. These values are not ranked.

Manufacturer application scope

Seagate IronWolf ProCommercial and enterprise NAS; video production RAID and shared network storage; workstations and servers

Toshiba N300Not verified

Sources

Seagate IronWolf Pro

Manufacturer specification · Seagate data sheet 'Best-Fit Applications' list (complete). The data sheet also describes IronWolf Pro as purpose-built for creative pro and medium-to-large business NAS environments.

Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)

Toshiba N300

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Weight

Seagate IronWolf ProConflicting evidence

Toshiba N300755 g

Sources

Seagate IronWolf Pro

Seagate's official documents conflict for ST12000NT001 weight: data sheet DS2129.4-2311US and the US product page give 670 g / 1.477 lb (typical); product manual 206815300 Rev B gives 655 g / 1.44 lb for the 12TB model (Table 20; Table 2 labels its weight row as maximum). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Weight (g/lb, typical)' 670g/1.477lb for ST12000NT001; the US product page ST12000NT001 key specifications also list 670g/1.477lb. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 20 'Weight' gives 12TB 1.44/655 (lb/g); Table 2 'Weight (max)' lists 685g (1.51 lb), 670g (1.48 lb) and 655g (1.44 lb) across the model columns. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted.

Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page

Toshiba N300

Manufacturer specification

Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB

Evidence is missing or conflicting on at least one side. This is not a verified difference.

4 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Seagate IronWolf Pro

What it brings

Seagate rates it for 550 TB/year and 2.5 million hours MTBF, with a five-year limited warranty and three years of Rescue Data Recovery Services where offered.
Manufacturer source Manufacturer source
Specified without a drive-bay limit, with AgileArray dual-plane balancing, time-limited error recovery and rotational-vibration sensors for RAID performance in multi-bay systems.
Manufacturer source Manufacturer source
At 12 TB the helium design's rated power is below the air-filled 8 TB and 10 TB IronWolf Pro parts' 10.1 W operating and 7.8 W idle, although Seagate's documents give different 12 TB figures: 7.8 W operating and 5.0 W idle in the data sheet, 8.3–8.98 W typical operating and 6.19 W idle in the product manual.
Manufacturer source Manufacturer source

What to check

Seagate's documents disagree on the maximum sustained transfer rate (data sheet 270 MB/s at the outer diameter; product manual 272 MB/s in its specification summary table and 285 MB/s in its recording and interface technology table); neither gives seek-time or IOPS figures (the manual lists only a 4.16 ms average latency).
Manufacturer source Manufacturer source
Non-operating shock is 200 G (data sheet: 1 ms and 2 ms; product manual: 2 ms), below the air-filled 8 TB IronWolf Pro's 300 G on the data sheet; for operating shock the data sheet gives 50/50 G (read/write, 2 ms) and the product manual 40 g (2 ms).
Manufacturer source Manufacturer source

Toshiba N300

What it brings

Toshiba's own per-capacity datasheet gives the 8 TB model a typical sustained transfer figure of 281 MB/s at 7,200 rpm.
Manufacturer source
Rated for continuous 24 x 7 operation with a 180 TB/year workload, rotational-vibration sensors and CMR recording, which matters for RAID rebuilds in multi-bay NAS units.
Manufacturer source Manufacturer source
The EMEA retail kit (HDWG780EZSTA) and bare drive (MN10ADA800S) are both listed on the official page, making the exact variant easy to confirm.
Manufacturer source Manufacturer source

What to check

The 8 TB model is rated for NAS enclosures of up to 8 bays; Toshiba's 12-bay rating applies only to larger capacities.
Manufacturer source
Warranty is three years, and the 8 TB MTTF (1,000,000 hours) is lower than the helium models' 1,200,000 hours.
Manufacturer source Manufacturer source
As a 7,200 rpm air-filled drive it draws about 9 W when operating and Toshiba lists 34 dB idle acoustics.
Manufacturer source Manufacturer source
HDWG780EZSTA is the retail number on Toshiba's EMEA product page and data sheet; those sources list no separate US retail number, so the US search also uses this EMEA number.
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

37 of 37 specifications Sources in each row

Source-backed specifications for Seagate IronWolf Pro and Toshiba N300
Specification	Seagate IronWolf Pro	Toshiba N300

CapacityDifferent Sources Seagate IronWolf Pro Manufacturer specification · 12 TB decimal capacity (Seagate: one terabyte equals one trillion bytes). Some capacity is used for formatting and other functions. Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	12000 GB	8000 GB
SSD / HDD Sources Seagate IronWolf Pro Manufacturer specification · 3.5-inch helium-filled hard disk drive with conventional magnetic recording (CMR) per Seagate. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)	HDD	HDD
Interface and version Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification · Toshiba states SATA 6.0 Gbit/s. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	SATA 6 Gb/s	SATA 6 Gb/s
Interface speeds supported Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 No source recorded.	6.0, 3.0 and 1.5 Gb/s SATA	Not provided
Form factor Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	3.5-inch	3.5-inch
Drive dimensionsDifferent Sources Seagate IronWolf Pro Manufacturer specification · Seagate lists height, maximum width and maximum depth. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification · Bare drive, no heatsink or enclosure. Taken from the datasheet page headed 'NAS Hard Drive – 8 TB', Retail Number HDWG780EZSTA. Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	26.11 mm high × 101.85 mm wide × 146.99 mm deep (1.028 in × 4.01 in × 5.787 in)	147 (L) × 101.85 (W) × 26.1 (H) mm
Weight Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001 weight: data sheet DS2129.4-2311US and the US product page give 670 g / 1.477 lb (typical); product manual 206815300 Rev B gives 655 g / 1.44 lb for the 12TB model (Table 20; Table 2 labels its weight row as maximum). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Weight (g/lb, typical)' 670g/1.477lb for ST12000NT001; the US product page ST12000NT001 key specifications also list 670g/1.477lb. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 20 'Weight' gives 12TB 1.44/655 (lb/g); Table 2 'Weight (max)' lists 685g (1.51 lb), 670g (1.48 lb) and 655g (1.44 lb) across the model columns. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted. Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Conflicting sources	755 g
Advertised thermal design Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · Product page feature list ('Temperature control') and 'High durability and heat prevention' section. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)	Not provided	Temperature control: automatic seek-speed adjustment to reduce heat during high-temperature operation

Rated performance and conditionsDifferent Sources Seagate IronWolf Pro Manufacturer specification · Only the spindle speed is recorded here: both Seagate documents give 7200 RPM. The data sheet and the product manual disagree on the maximum sustained transfer rate (data sheet 270MB/s at the outer diameter; manual 272 MB/s max sustained OD in Table 2 and 285 MB/s sustained max in Table 4) and on cache (data sheet 256MB; manual 512MB); those figures are recorded as explicit conflicts in the max_sustained_transfer and cache fields, not as a value here. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors. Not our measurement. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification · Toshiba 'Max. data transfer speed (sustained MB/s Typ.)' on the 8 TB datasheet page. Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	7200 RPM	Up to 281 MB/s maximum sustained data transfer rate (typical); 7,200 rpm

Cache Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives a 256 MB cache; product manual 206815300 Rev B gives a 512 MB cache buffer. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Cache (MB)' 256MB for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Cache buffer' 512MB, a single value spanning all four model columns including ST12000NT001; its key-features list also says '512MB data buffer' and '512MB cache buffer'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification · The product page lists '512 MB / 1024 MB' across the range; the 8 TB datasheet page gives 512 MB. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Conflicting sources	512 MB
Cache technology Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · Product page: a self-contained cache algorithm with on-board buffer management that optimises cache allocation during read/write. Buffer size is recorded separately. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)	Not provided	Toshiba Dynamic Cache Technology

Warranty terms and endurance if applicableDifferent Sources Seagate IronWolf Pro Manufacturer specification · Seagate states Rescue Data Recovery Services are not available in all countries. Workload rate limit is a rating, not a warranty write cap stated by Seagate. Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification · 8 TB datasheet page: 'Limited warranty (years) 3' and 'Workloads (TB/year) 180'. Toshiba does not state how the workload rating relates to the warranty terms. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	5-year limited warranty; rated workload 550 TB/year; 3 years of Rescue Data Recovery Services included	3-year limited warranty; rated workload up to 180 TB/year
Limited warranty timeDifferent Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	5 years	3 years
Manufacturer application scope Sources Seagate IronWolf Pro Manufacturer specification · Seagate data sheet 'Best-Fit Applications' list (complete). The data sheet also describes IronWolf Pro as purpose-built for creative pro and medium-to-large business NAS environments. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 No source recorded.	Commercial and enterprise NAS; video production RAID and shared network storage; workstations and servers	Not provided
MTBFDifferent Sources Seagate IronWolf Pro Manufacturer specification · Seagate-rated mean time between failures, data sheet 'Mean Time Between Failures (MTBF, hours)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification · Toshiba states MTTF (hours). The 8 TB datasheet page gives 1,000,000; the 12 TB and larger datasheet pages give 1,200,000, and the product page says the 12 TB to 22 TB models use a helium-sealed design. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	2,500,000 hours	1,000,000 hours (MTTF)

Power Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001 power: data sheet DS2129.4-2311US gives 7.8 W average operating, 5.0 W average idle and 1.0 W standby; product manual 206815300 Rev B gives 8.3–8.98 W typical operating depending on workload, 6.19 W average idle and 1.16 W standby. Both give a 2.0 A typical 12 V startup current. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet (ST12000NT001): average operating 7.8 W; idle average 5.0 W; standby typical 1.0 W; sleep typical 1.0 W; startup current 2.0 A typical (12 V). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 6 'DC power requirements (24/20/16/12TB models)' (typical measurements based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 35°C ambient): Avg Idle 6.19 W; Standby 1.16 W; typical DC operating 8.98 W (random read 4K16Q), 8.75 W (random write 4K16Q), 8.3 W (sequential read 64K16Q), 8.58 W (sequential write 64K16Q). Manual Table 2: startup current (typical) 12V (peak) 2.0A. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Conflicting sources	9.07 W typical operating; 5.74 W typical active idle; 5 V DC +10 %/-7 % and 12 V DC ±10 % supply
Power supply requirements Sources Seagate IronWolf Pro Manufacturer specification · Data sheet 'Power Supply Requirements' row: +12 V and +5 V (no tolerance listed). Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual Table 2: 'Voltage tolerance (including noise)' 5V ± 5% and 12V ± 10%, given as a single value for the 24/20/16/12TB models the manual covers; section 2.5.3 adds peak-to-peak noise limits. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	+12 V and +5 V; tolerance including noise 5 V ± 5%, 12 V ± 10%	Not provided
Operating temperature Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 0 °C ambient minimum to 65 °C drive-reported maximum; product manual 206815300 Rev B gives 5 °C to 65 °C drive-reported and a maximum allowable drive-reported temperature of 60 °C. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Operating Temperature (ambient, min °C)' 0°C and 'Operating Temperature (drive reported, max °C)' 65°C for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operating temperature 5°C to 65°C (Drive Reported Temperature)'; Table 11 '41°F to 149°F (5°C to 65°C) temperature range ... as reported by the drive' and 'The maximum allowable drive reported temperature is 140°F (60°C).' Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Conflicting sources	5–60 °C
Non-operating temperatureDifferent Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	-40 °C to 70 °C (ambient)	-40–70 °C
Operating shock rating Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001: data sheet DS2129.4-2311US gives 50/50 G (read/write, 2 ms) operating shock; product manual 206815300 Rev B gives 40 g (2 ms, typical, limited by Z-axis). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Shock, Operating 2ms (Read/Write) (Gs)' 50/50Gs for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Operational Shock (2 ms) 40 g' (all four models); Table 14 'intermittent shock pulses not exceeding 40 g typical at a 2ms duration limited by Z-axis'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Conflicting sources	686 m/s² {70 G} (2 ms)
Non-operating shock ratingDifferent Sources Seagate IronWolf Pro Manufacturer specification · Seagate 'Shock, Nonoperating, 1ms and 2ms (Gs)' row. Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	200 G; 1 ms and 2 ms	2,450 m/s² {250 G} (2 ms)

Spindle speed Sources Seagate IronWolf Pro Manufacturer specification · Seagate data sheet DS2129.4 second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	7200 RPM	7200 RPM
Recording technology Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	CMR (conventional magnetic recording)	CMR
Workload rate limit Sources Seagate IronWolf Pro Manufacturer specification · Seagate workload rate limit (WRL); drives are specified for 8,760 power-on hours per year (24×7). Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 Manufacturer specification Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	550 TB/year	180 TB/year
Nonrecoverable read errors (max) Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 No source recorded.	1 per 10E15 bits read	Not provided
Load/unload cycles Sources Seagate IronWolf Pro Manufacturer specification · Product manual Table 2 'Load-unload cycles' (a single value for the 24/20/16/12TB models the manual covers) and section 2.9 '600,000 cycles'; the data sheet has no load/unload row. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	600,000	Not provided
Sector size Sources Seagate IronWolf Pro Manufacturer specification Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 No source recorded.	512E (512-byte emulation)	Not provided
NAS features Sources Seagate IronWolf Pro Manufacturer specification · Seagate says IronWolf Health Management is enabled on all leading NAS systems and to check with the NAS vendor or a Seagate sales representative. Seagate states IronWolf drives have been tested by leading NAS providers such as Asustor, QNAP and UGREEN for compatibility, and recommends reviewing the NAS vendor's compatibility list for the latest approved drive. The rotational vibration rating is recorded separately (vibration_rotational) because Seagate's data sheet and product manual state it with different frequency ranges and units. Seagate IronWolf Pro 12TB (ST12000NT001) — official US product page Seagate IronWolf Pro 12 TB (ST12000NT001) — official UK product page Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table) Toshiba N300 No source recorded.	Drive bays supported: unlimited; AgileArray with dual-plane balancing and time-limited error recovery (TLER); rotational vibration (RV) sensors; IronWolf Health Management	Not provided
NAS bays supported Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · 8 TB page of the datasheet (retail HDWG780EZSTA, bulk MN10ADA800S). The datasheet gives 'up to 12' only on the bulk-number 14 TB to 22 TB pages (MN11ACA14TS, MN11ACA16TS, MN11ACA18TS, MN11ACA20TS and MN11ACA22TS); the retail 14 TB (HDWG51EEZSTA), 12 TB, 10 TB, 6 TB and 4 TB pages give up to 8. Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Not provided	Up to 8 bays
NAS firmware technology Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · Toshiba: firmware that fine-tunes HDD behaviour for rapid data access and boosts RAID performance through optimised disk coordination. No measured benefit is published. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Not provided	Toshiba NASLink Technology
Advertised mechanical design Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · Listed in the product page feature list; no further detail or measured benefit is given for the N300. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)	Not provided	Toshiba Stable Platter Technology
Error recovery control Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · Listed in the product page feature list and FAQ; Toshiba publishes no timeout values. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)	Not provided	Yes
Unrecoverable error rate Sources Seagate IronWolf Pro No source recorded. Toshiba N300 Manufacturer specification · 8 TB datasheet page. The product page's range-wide table lists '1 per 10^14 bits read / 1 per 10^15 bits read' across capacities. Toshiba N300 NAS Hard Drive — official product page and part-number range (EMEA)Toshiba N300 NAS Hard Drive datasheet (EN, 05/2026) — per-capacity specification pages including 8 TB	Not provided	1 per 10^15

Show unverified (4)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
Max sustained transfer rate (OD) Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001's maximum sustained transfer rate: data sheet DS2129.4-2311US gives 270 MB/s (outer diameter); product manual 206815300 Rev B gives 272 MB/s (max sustained, outer diameter, Table 2) and 285 MB/s (sustained data transfer rate, max, Table 4). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Max. Sustained Transfer Rate OD (MB/s)' 270MB/s for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Max sustained transfer rate OD (MB/s)' 272 and 'Sustained transfer rate OD (MB/s)' 259 (single values spanning all four models); Table 4 'Sustained data transfer rate (MB/s max)' 285 for 24/20/16/12TB. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate states actual data rates may vary depending on operating environment and other factors. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	Conflicting sources	Not provided
Non-operating vibration rating Sources Seagate IronWolf Pro Seagate's official documents agree on 2.27 Grms but conflict on the frequency range for ST12000NT001: data sheet DS2129.4-2311US gives 10–500 Hz; product manual 206815300 Rev B gives 2–500 Hz. Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Vibration, Nonoperating: 10Hz to 500Hz (Grms)' 2.27 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Linear Random Non-Operating Vibration 2–500 Hz: 2.27 Grms'; Table 17 'PSD Profile 2-500 Hz at 2.27 Grms'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	Conflicting sources	Not provided
Rotational vibration rating (operating) Sources Seagate IronWolf Pro Seagate's official documents both give 12.5 but conflict on frequency range and unit for ST12000NT001: data sheet DS2129.4-2311US gives 12.5 rad/s at 10–1500 Hz; product manual 206815300 Rev B gives 12.5 rad/s² at 20–1500 Hz (random rotary operating vibration). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Rotational Vibration @ 10-1500 Hz (rad/s)' 12.5 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Random Rotary Operating Vibration 20–1500Hz: 12.5 rads/s²'; Table 16 'PSD OF 20-1500 Hz at 12.5 rad/sec^2'. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Units as published; not converted. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	Conflicting sources	Not provided
Acoustics Sources Seagate IronWolf Pro Seagate's official documents conflict for ST12000NT001 acoustics: data sheet DS2129.4-2311US gives 20 dBA idle and 26 dBA seek (typical); product manual 206815300 Rev B gives A-weighted sound power of 2.8 bels idle and 3.2 bels performance seek (typical). Neither document states which figure applies to current ST12000NT001 production. · Manufacturer specification · Data sheet: 'Acoustics, Idle (typical, measured in Idle 1 state) (dBA)' 20 and 'Acoustics, Seek (typical) (dBA)' 26 for ST12000NT001. Seagate data sheet DS2129.4-2311US second table; ST12000NT001 is the second model column (14TB ST14000NT001, 12TB ST12000NT001, 10TB ST10000NT001, 8TB ST8000NT001, 6TB ST6000NT001). Product manual: Table 2 'Drive acoustics, sound power (bels)' idle 2.8 (typical) / 3.0 (max) and performance seek 3.2 (typical) / 3.4 (max); Table 18 gives the same for all models; section 2.7 says these are overall A-weighted acoustic sound power levels consistent with ISO 7779. Seagate IronWolf Pro SATA Product Manual 206815300 Rev B (July 2025), which covers ST24000NT002, ST20000NT001, ST16000NT001 and ST12000NT001 and is linked as 'Download User Manual' from the ST12000NT001 entry on the US product page. Each figure is kept in the unit Seagate states (dBA and bels); not converted. Seagate IronWolf Pro 3.5 HDD data sheet DS2129.4-2311US (per-model specification table)Seagate IronWolf Pro SATA Product Manual 206815300 Rev B, July 2025 (models ST24000NT002, ST20000NT001, ST16000NT001, ST12000NT001) — linked as 'Download User Manual' from the ST12000NT001 entry on the official US product page Toshiba N300 No source recorded.	Conflicting sources	Not provided

First product manufacturer source Second product manufacturer source

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