We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 3.5 inch SATA hard drive with circuit board visible

Seagate

Seagate ST6000NM021A 6TB 7200RPM 256MB SATA 3.5" internal hard drive

SKU CH-5ENJ-F12B9 MPN ST6000NM021A

Enterprise-grade 6TB 3.5" SATA hard drive with 7200 RPM, 256MB cache, and 550 TB/year workload rating for 24×7 operation

  • InterfaceSATA 6.0Gb/s
  • Capacity6TB
  • NAND Flash Memory TypeSLC
  • RPM7200 RPM
  • Cache256MB
  • FeaturesHard Drive

Options 6TB Standard Model

  • 6 TB capacity stores massive data sets
  • 7200 RPM spindle speed accelerates read and write performance
  • 256 MB cache buffers bursts for smoother throughput
  • SATA 6.0 Gb/s interface enables fast host transfers
  • 550 TB yearly workload rating supports 24×7 enterprise duty

6 TB Enterprise Storage

The Seagate Exos 7E8 ST6000NM021A delivers six terabytes of capacity in a 3.5 inch form factor. It spins at 7200 RPM with a 256 MB cache and connects via a SATA 6.0 Gb/s interface. This new drive is built for continuous operation in bulk data environments.

Suited for RAID and data centres.

The drive targets 24×7 workloads such as replicated storage arrays and RAID systems where vibration tolerance and a high annual workload rating matter. It is not designed for mobile enclosures or external backup kits that require bus power or a smaller physical footprint. Buyers needing silent desktop storage may prefer lower-speed alternatives.

SATA 6.0 Gb/s interface decides compatibility

The single specification that determines fit is the SATA 6.0 Gb/s interface, which requires a matching motherboard or controller port and a standard 3.5 inch drive bay with SATA power and data cables. Without that connection the drive cannot be installed or used.

Highlights

  • 6 TB capacity stores massive data sets
  • 7200 RPM spindle speed accelerates read and write performance
  • 256 MB cache buffers bursts for smoother throughput
  • SATA 6.0 Gb/s interface enables fast host transfers
  • 550 TB yearly workload rating supports 24×7 enterprise duty

Specifications

BrandSeagate
SeriesExos 7E8
ModelST6000NM021A
InterfaceSATA 6.0Gb/s
Capacity6TB
NAND Flash Memory TypeSLC
RPM7200 RPM
Cache256MB
FeaturesHard Drive
Form Factor3.5"
Shipping weight0.91 kg
Package size305 × 254 × 203 mm

Other versions of this model

4 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the 3.5" SATA 6.0Gb/s drive and what step is often missed?

Mount the drive in a 3.5" bay, attach both the SATA data cable and the SATA power connector from the PSU, then enable the SATA port in BIOS; the step often missed is connecting the power cable.

What maintenance or replacement will the Exos 7E8 drive need later?

No scheduled maintenance is required; the drive is rated for 550 TB per year workloads and a 2 million hour MTBF, so replacement is only needed if it fails or capacity is exceeded.

What limit appears first under sustained 24×7 use?

The 550 TB per year workload rating is the first limit; exceeding it can reduce the 2 million hour MTBF reliability target.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.