Seagate · ST12000NM002H
Seagate Exos X24 12TB Enterprise SATA HDD
A 12TB 3.5-inch SATA 6Gb/s enterprise HDD for validated server, storage-array and archival deployments. Confirm host compatibility and sector format for the exact ST12000NM002H part number.
- 12TB / 3.5-inch / SATA 6Gb/s
- CMR recording, 7200rpm
- 512 MB cache, in vendor-specified units
- 285 MB/s maximum sustained transfer
- Default 512e; convertible to 4Kn
- 550TB/year rated class; manual maximum <550TB/year
Published model specifications describe available options, not the delivered configuration.
Configurations & prices
Contact our team to confirm the configuration and quotation.
Listed prices are indicative; confirm tax, stock, compatibility, lead time and service in a written quotation.
Specifications & selection notes
Capacity, Format and Interface
| Capacity | 12 TB (1 TB = 10^12 bytes)（Advertised decimal capacity，Formatting reduces usable capacity） |
|---|---|
| Interface | SATA 6 Gb/s; single port（SATA Single-port interface） |
| Form factor | 3.5 inch（3.5 Inches Specifications） |
| Recording | CMR（Conventional magnetic recording） |
| Sector format | Default 512e (512 B logical / 4096 B physical); FastFormat selectable 4Kn（Default 512e，Supports those listed in the documentation 4Kn Format conversion） |
Performance and Cache
| Spindle speed | 7200 rpm（Revolutions per minute） |
|---|---|
| Average latency | 4.16 ms |
| Cache | 512 MB（Cache capacity） |
| Max sustained transfer | 285 MB/s (272 MiB/s), outer diameter（Maximum outer-track sustained transfer rate） |
| Random read/write | 168 / 550 IOPS (4K QD16, write cache disabled)（4K、QD16 Reads with write cache disabled/Write IOPS） |
Enterprise Features and Workload
| Workload | Rated class 550 TB/year; manual maximum <550 TB/year（Rated workload class 550TB/Years；The manual specifies a limit below 550TB/Years） |
|---|---|
| Availability | 24×7; 8760 power-on hours/year（Designed for continuous round-the-clock operation） |
| Statistical mean time between failures MTBF/MTTF | 2,500,000 h; AFR 0.35%（Population-level statistical metric，Not an individual-drive lifetime or failure-free guarantee） |
| Security | Standard ISE; not SED or FIPS（Standard ISE Edition，Non- SED Or FIPS） |
| Power management | PowerChoice / PowerBalance |
Physical, Power and Environment
| Supply | +12 V and +5 V |
|---|---|
| Idle power | 5.4 W average idle（Average idle power；SATA Manual Rev C Table 8 Of Avg Idle Row，Non- Idle_A） |
| Dimensions | 147 × 101.85 × 26.1 mm (L×W×H, max)（Length×Width×High，Maximum dimensions） |
| Weight | 655 g maximum（Maximum weight；SATA Manual Rev C Applicable capacity column） |
| Enclosure | Helium sealed（Helium sealed） |
| Operating temperature | Minimum ambient 5°C / maximum drive-reported 60°C（Distinguish minimum ambient temperature from maximum drive-reported temperature） |
| Random read/write power | 8.15 / 6.47 W maximum DC, random read/write 4K16Q（4K、QD16 Random read/Maximum write DC Power consumption） |
| Typical random read/write power | 8.10 / 6.35 W typical DC, random read/write 4K16Q（Typical DC Power consumption） |
| Power measurement conditions | 35°C ambient, nominal +5.0V and +12.0V supply, SATA 6.0Gb mode（35°C Environment、Rated power supply、SATA 6.0Gb Mode） |
Selection, Compatibility and Limits
| Host compatibility | Check the server/Workstation、RAID/HBA、Backplane、Firmware、Capacity and sector format；Specifications are not whole-system compatibility certification。 / Validate host, RAID/HBA, backplane, firmware, capacity and sector format; specifications are not system qualification. |
|---|---|
| Sector format | Default 512e；Conversion 4Kn First verify platform support and create a full backup，Format conversion may erase data。 / Default 512e; confirm support and back up before 4Kn conversion, which may erase data. |
| Power and installation | Check 3.5 Inches Drive bays、Drive tray、SATA Interface、Power-on power margin and airflow；Hot-swap capability depends on the host system。 / Check 3.5-inch bay, carrier, SATA connection, PSU spin-up headroom and cooling. Hot-swap depends on the host system. |
| Usable capacity and backup | Nominal TB Is decimal capacity，Formatting and the file system reduce usable capacity；RAID Does not replace an independent backup。 / TB is decimal capacity; formatting and filesystems reduce usable space. RAID is not a substitute for independent backup. |
| Statistical reliability | MTBF/MTTF And AFR Are population-level statistical metrics under manufacturer-specified conditions，Not an individual-drive lifetime or zero-failure guarantee。 / MTBF/MTTF and AFR are population statistics under vendor conditions, not individual drive-life or zero-failure guarantees. |
| Capacity-specific source priority | Weight and power use the applicable capacity's Exos X24 SATA Product Manual Rev C（2023-11），Power consumption Table 8；Where it differs from the family datasheet, this page follows the manual's table。 / Weight and power follow the exact-capacity columns and Table 8 in the November 2023 Rev C SATA manual rather than shared datasheet figures. |
Official Documentation and Support
| Datasheet | https://www.seagate.com/content/dam/seagate/en/content-fragments/products/datasheets/exos-x24/exos-x24-DS2080-2307US-en_US.pdf |
|---|---|
| Official product page | https://www.seagate.com/ca/en/support/internal-hard-drives/enterprise-hard-drives/exos-x24/ |
| Official document — Exos X24 datasheet | https://www.seagate.com/content/dam/seagate/en/content-fragments/products/datasheets/exos-x24/exos-x24-DS2080-2307US-en_US.pdf |
| Official document — Exos X24 SATA CMR manual Rev C | https://www.seagate.com/content/dam/seagate/assets/support/internal-hard-drive/enterprise-hard-drives/exos-x24/_shared/files/Seagate_EXOS24_CMR_ISE_SED(10-12-16-20-24TB)_Rev-C.pdf |
| Source checked | 2026-09-17 |
| Image disclosure | Exos X24 Series illustration，Actual capacity and part number are as specified on this page。 / Exos X24 family illustration; exact capacity and part number follow this page. |
| Enquiry scope | Selection and specification checks can be assisted；Price、Stock、Lead time、Warranty and delivery scope are subject to actual confirmation。 / Ask for selection and specification checks; price, stock, lead time, warranty and delivery scope require confirmation. |
| Manual cross-check | 2026-09-17；SATA Rev C PDF p11 summary and p18 Table 8; native PDF text and rendered table checked. |
Product images
Images are references. Components, interfaces and the delivered configuration are specified in the quotation.
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