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Silver 3.5 inch SAS hard drive with green circuit board visible

Epoch

Epoch KFJ7G 12TB 7.2K SAS 3.5" 12Gb/s internal hard drive

SKU CH-HKAJ-FGD4T

A 12 TB, 7200 RPM SAS hard drive in a 3.5 inch form factor for Dell PowerEdge 14 and 15 generation servers

  • Total capacity12 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed7,200 RPM
  • 12 TB capacity stores large datasets
  • 7 200 RPM spindle delivers responsive throughput
  • SAS 12 Gb/s interface enables fast data transfer
  • 5 inch form factor fits standard drive bays
  • Compatible with Dell PowerEdge 14 and 15 generation servers

12TB SAS 12Gb/s Enterprise Hard Drive

The Epoch KFJ7G is a 12TB 3.5-inch internal hard drive spinning at 7200 RPM with a SAS 12Gb/s interface. It is supplied as an upgrade kit tested for compatibility with listed Dell PowerEdge 14G and 15G rack and tower servers. The drive is new and intended for enterprise storage deployments.

Server builders needing 12TB at 7200 RPM on SAS

This drive suits administrators expanding capacity in the specific Dell PowerEdge 14G and 15G models listed in the compatibility data. It is not for systems that lack a 12Gb/s SAS backplane or controller, nor for workloads requiring a different interface or form factor.

SAS 12Gb/s interface determines compatibility

The single specification that decides fitment is the SAS 12Gb/s interface. The server or storage array must provide a 12Gb/s SAS connection and a 3.5-inch drive bay; without that interface the drive cannot operate.

How it compares

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

Price $440.99
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 $36.75 per TB
Cheaper than about 74% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Total capacity12 TB
Performance
Rotational speed7,200 RPM
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

How much usable space will the 12TB drive show in the operating system?

The drive presents 12TB raw capacity; the OS will report slightly less due to binary versus decimal counting and filesystem overhead.

What does the SAS 12Gb/s interface limit in practice?

The SAS 12Gb/s link caps the maximum theoretical throughput at 12Gb/s; actual sustained transfer depends on the 7200 RPM platters and the host controller.

Will this 3.5" drive fit in a Dell PowerEdge R740 hot-swap bay?

Yes, the 3.5" form factor matches the standard hot-swap trays used in the listed 14G and 15G PowerEdge servers including the R740.

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