12TB • Enterprise storage
Seagate Exos X24 12TB ST12000NM002H Enterprise Hard Drive
Expand a compatible server, storage array or NAS with the Seagate Exos X24 12TB ST12000NM002H. This helium-sealed 3.5-inch enterprise HDD combines CMR recording, a SATA 6Gb/s interface, 7200RPM operation and 512MB cache for continuously running storage.
- Capacity
- 12TB
- Spindle speed
- 7200RPM
- Cache
- 512MB
- Drive class
- Enterprise
Features
Enterprise CMR platform
Combine 12TB capacity with conventional magnetic recording for capacity-focused server and storage deployments.
7200RPM and 512MB cache
A 7200RPM spindle and 512MB buffer support demanding storage workloads.
Helium-sealed design
A sealed helium platform is used throughout the specified Exos X24 range.
Storage management
PowerChoice and PowerBalance provide power-management options. S.M.A.R.T. and SeaTools support drive-health checks.
Flexible sector format
Supplied in 512e format, with FastFormat conversion to 4Kn for compatible systems. Reformatting erases all drive data.
Instant Secure Erase
ST12000NM002H is the standard ISE model. It is not the separate ST12000NM001H self-encrypting model.
Technical specifications
| Manufacturer | Seagate |
|---|---|
| Product family | Exos X24 |
| Model | ST12000NM002H |
| Capacity | 12TB |
| Form factor | 3.5-inch internal HDD |
| Interface | SATA 6Gb/s |
| Spindle speed | 7200RPM |
| Cache | 512MB |
| Recording technology | CMR |
| Drive design | Helium sealed |
| Sector format | 512e default; 4Kn via FastFormat |
| Model variant | Standard ISE (not the SED model) |
| Annual workload rating | 550TB/year class |
| MTBF | 2,500,000 hours |
| Duty | 24×7 / 8,760 hours per year |
| Power management | PowerChoice and PowerBalance |
| Hot-plug support | Yes, with a compatible host/backplane |
| Dimensions (L × W × H) | 147 × 101.85 × 26.1 mm (maximum) |
| Manufacturer limited warranty | 5 years |
Warranty
Seagate specifies a five-year limited manufacturer warranty for this Exos X24 model. Eligibility depends on the supplied drive, serial number and applicable regional terms. Contact NAS Marketplace with your order details for purchase-related warranty assistance.
Frequently asked questions
Is this a SATA or SAS drive?
ST12000NM002H is the SATA 6Gb/s model. Do not substitute a SAS model for a SATA-only NAS.
Does X24 mean the drive is 24TB?
No. X24 is the product-family name; ST12000NM002H has 12TB capacity.
Can it be used in a NAS?
Use only with an enclosure, controller and firmware that support this exact drive and its sector format.
One internal hard drive; NAS enclosure not included. Check exact-model compatibility before purchase. 1TB equals one trillion bytes. MTBF describes statistical reliability, not the lifetime of an individual drive. RAID is not a substitute for an independent backup.
Confirm controller support before changing sector format; FastFormat conversion deletes existing data.
