Seagate · PC / gaming
ST12000DM003
BarraCuda 12TB
SATA 6 Gb/s · 3.5-inch · CMR
Check your options
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 ST12000DM003 is a 12TB BarraCuda hard drive for desktop and gaming storage, using SATA 6 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | ST12000DM003 |
|---|---|
| Nominal capacity | 12 TB · 12000 GB |
| Interface | SATA 6 Gb/s |
| Recording | CMR |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| Load/unload cycles | 600000 |
| Power-on hours per year | 2400 |
| Workload rating (TB/year) | 120 |
| Manufacturer limited warranty | 2 years (eligible new drives) |
Source: Seagate BarraCuda manufacturer specifications, pages 2. 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.
- 120 TB/year workload rating. This is a workload limit, not a promise of drive lifespan or a backup guarantee.
Before ordering
Match ST12000DM003, 12TB and SATA 6 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.
Western Digital · WD Blue
WD120EAGZ
12TB · SATA 6Gb/s · CMR
Compare with ST12000DM003 →View on Amazon US ↗ASIN B0F7MJV2X8 · Check price and conditionST12000DM003 questions answered
Is ST12000DM003 CMR or SMR?
The manufacturer lists CMR recording for ST12000DM003. Other models and capacities in the same family can differ.
What connection does ST12000DM003 need?
ST12000DM003 uses SATA 6 Gb/s and a 3.5-inch form factor. Match both with the computer, controller or enclosure. An M.2 slot, 2.5-inch bay and 3.5-inch bay are not interchangeable.
How much usable space does ST12000DM003 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 ST12000DM003?
Manufacturer specification: 2 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.