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Silver 3.5 inch bare hard drive with SAS connector

DELL

DELL 400-ATKM 4 TB SAS 12Gb/s 7200 RPM 3.5in internal hard drive

SKU CH-BZWQ-60YSM

A 4 TB 3.5-inch nearline drive spinning at 7200 RPM with a SAS 12Gb/s interface for high-capacity internal storage

  • Total capacity4 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Mean latency12Gb/s
  • 4 TB capacity expands storage for demanding workloads
  • 7200 RPM spindle speed delivers fast disk access
  • SAS 12Gb/s interface enables high-throughput data transfer
  • 2 GBps external transfer rate supports rapid backups
  • Advanced format 512n optimises sector efficiency

Capacity and interface

The Dell 400-ATKM is a 4 TB internal hard drive built for 3.5-inch bays. It uses a SAS 12Gb/s connection and spins at 7200 RPM. The drive targets servers and workstations that need nearline storage with a 512n advanced format.

Throughput and limits

Sustained external transfers reach 1.2 GBps over the SAS link. The 7200 RPM spindle gives low average latency for random reads and writes. Workloads that exceed the 4 TB capacity or demand higher IOPS will need additional drives or a faster media tier.

Packaging and integration

The unit ships as a bare drive without cables, brackets or software utilities. Retail or OEM packing may vary. Installation relies on the host chassis providing power and a compatible SAS backplane or controller.

How it compares

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

Price $263.99
Pricier than about 79% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $66.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameDell
Model name400-ATKM
Total capacity4 TB
Performance
Rotational speed7,200 RPM
Mean latency12Gb/s
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Will this 12 Gb/s SAS drive negotiate down to 6 Gb/s on my older controller?

Yes, the SAS 12 Gb/s interface auto-negotiates to 6 Gb/s or 3 Gb/s on legacy controllers without any jumper changes.

How can I confirm the 4 TB nearline drive is running at 7200 RPM after installation?

Check the spindle speed in SMART data or the BIOS hardware monitor; both will report 7200 rpm when the drive is spinning normally.

The listing says bare drive — does the 3.5" unit ship with mounting screws or a SAS cable?

No, bare-drive packaging includes only the drive itself; mounting screws and a SAS data cable must be sourced separately.

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