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Seagate Exos X14 12 TB 3.5 inch internal hard drive silver aluminium case

Seagate

Seagate Exos X14 ST12000NM0008 12 TB internal hard drive

SKU CH-8Y8C-AX599 MPN ST12000NM0008

12 TB 3.5" internal hard drive with 7200 rpm spindle speed, 256 MB cache and SATA 600 interface

  • Total capacity12 TB
  • Cache memory256 MB
  • Key featuresHard Drive
  • 12 TB capacity stores massive datasets in one 3.5" drive
  • 7200 rpm spindle speed delivers fast sequential throughput for heavy workloads
  • 256 MB cache buffers bursts to sustain performance under load
  • SATA 600 interface integrates directly into standard server backplanes
  • Helium-filled design reduces power draw to 10 W during operation

12 TB SATA enterprise drive

The Seagate Exos X14 ST12000NM0008 is a 12 TB internal hard drive built for continuous operation in servers and storage arrays. It uses a SATA 600 interface and a 3.5 inch form factor to fit standard drive bays. The helium-sealed design reduces weight to approximately 1.52 lb and lowers operating power consumption to 10 W.

Capacity headroom at 12 TB

With 12 TB of storage and a 256 MB cache, the drive handles large sequential workloads such as backup, archiving and media repositories. The 7200 rpm spindle speed supports sustained throughput for multi-drive RAID sets. The 512e sector format ensures compatibility with legacy operating systems and older storage controllers that do not support native 4Kn addressing.

Helium build and SATA connectivity

Helium filling cuts internal turbulence, allowing seven disks to spin in a standard 1 inch height while keeping vibration low in dense chassis. The SATA 600 connector provides a familiar cabling path for existing backplanes and host bus adapters. The drive weighs 1.52 lb and measures 4 inches wide by 5.8 inches deep, matching the standard 3.5 inch footprint for tool-less trays. It is not suited for portable use or laptops requiring 2.5 inch drives.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $551.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 12 TB
Higher than about 90% of the 2,372 comparable items (median 2 TB).
Price per TB $46.00 per TB
Cheaper than about 65% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineExos X14
Model nameST12000NM0008
Total capacity12 TB
Storage
Cache memory256 MB

Questions about this item

Will the 3.5" 12 TB Exos X14 fit in the same drive bay and use the same SATA/600 cables as my older 3.5" SATA drives?

Yes, it uses the standard 3.5" form factor and SATA/600 interface, so it mounts in the same bays and connects with the same data and power cables as earlier 3.5" SATA drives.

How can I confirm the ST12000NM0008 is running at its rated 7200 rpm and 256 MB cache after installation?

Check the drive model and firmware in BIOS or a tool such as CrystalDiskInfo; both will report 7200 rpm rotation speed and 256 MB buffer for the Exos X14.

Does the retail box include mounting screws and a SATA data cable, or must I buy them separately?

Packing may vary between retail and OEM; the drive itself is the only guaranteed item, so plan to supply 3.5" mounting screws and a SATA data cable if your chassis or controller does not already include them.

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