Seagate · Enterprise
ST12000NM005H
Exos X24 12TB
SAS 12 Gb/s · 3.5-inch · CMR
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An exact Amazon listing has not been verified for this model yet.
Compare alternatives ↓As an Amazon Associate I earn from qualifying purchases.The Seagate ST12000NM005H is a 12TB Exos X24 hard drive for server and enterprise storage, using SAS 12 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | ST12000NM005H |
|---|---|
| Nominal capacity | 12 TB · 12000 GB |
| RPM | 7200 |
| Interface | SAS 12 Gb/s |
| Recording | CMR |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| Recording evidence | Manufacturer recording specification ↗ |
| Recording verified | 2026-10-02 |
| Average idle power (W) | 6.5 |
| Power-on hours per year | 8760 |
| Manufacturer limited warranty | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 285 |
Source: Seagate Exos X24 manufacturer specifications, pages 3. Reviewed 2026-09-07. Published specifications, not our benchmark results.
What the specifications mean
- CMR recording is specified for this exact model. Check enclosure support and workload limits before installing it in an array.
- Up to 285 MB/s sustained transfer, as specified by the manufacturer. This is not a measured game-loading or random-I/O result.
Before ordering
Match ST12000NM005H, 12TB and SAS 12 Gb/s against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
No verified exact-model ASIN is linked yet. This does not establish whether the model is currently available. Compare the alternatives below and check their listings.
Same-capacity alternatives with Amazon US links
These models share the drive type, interface class and capacity. Compare their specifications and your system requirements before choosing a replacement.
Toshiba · MG09
MG09SCA12TE
12TB · SAS 12 Gb/s · CMR
Specifications & offers →View on Amazon US ↗ASIN B0DF5Q81MD · Check price and conditionSeagate · Exos X18
ST12000NM004J
12TB · SAS 12 Gb/s · CMR
Specifications & offers →View on Amazon US ↗ASIN B09YRZ1JPC · Check price and conditionSeagate · Exos X16
ST12000NM002G
12TB · SAS 12 Gb/s
Specifications & offers →View on Amazon US ↗ASIN B086WVVXCS · Check price and conditionST12000NM005H questions answered
Is ST12000NM005H CMR or SMR?
The manufacturer lists CMR recording for ST12000NM005H. Other models and capacities in the same family can differ.
What connection does ST12000NM005H need?
ST12000NM005H uses SAS 12 Gb/s. It needs a compatible SAS controller or backplane; a standard motherboard SATA port cannot run it.
How much usable space does ST12000NM005H provide?
Its nominal capacity is 12000 GB, approximately 11175.9 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for ST12000NM005H?
Manufacturer specification: 5 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.