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Silver 3.5 inch SAS hard drive bare drive no packaging

DELL

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

SKU CH-YN9H-2BX02

A 4 TB 3.5" internal hard drive with a 12 Gb/s SAS interface spinning at 7200 RPM for nearline 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
  • 4TB capacity stores large datasets
  • SAS 12Gb/s interface enables fast data transfer
  • 7200 RPM spindle speed delivers responsive performance
  • 5-inch form factor fits standard drive bays
  • Dell 400-AEQT part number ensures compatibility

Dell 400-AEQT 4TB Nearline SAS Drive

The Dell 400-AEQT is a 4TB 3.5-inch internal hard drive built for nearline storage workloads. It connects through a 12Gb/s SAS interface and spins at 7200 RPM. The bare-drive packaging suits system integrators and IT teams expanding array capacity in compatible Dell servers or storage enclosures.

Capacity and headroom for nearline workloads

Four terabytes provide substantial space for bulk data, backups and archival tasks that do not demand low-latency flash. The 7200 RPM spindle delivers consistent sequential throughput for streaming reads and writes, while the 12Gb/s SAS link offers ample bus headroom for multiple drives on a single controller. Random I/O performance will saturate well before the interface does, so workloads heavy on small-block access should plan accordingly.

Upgrade path from smaller nearline SAS drives

This drive replaces lower-capacity 3.5-inch nearline SAS units such as 1TB or 2TB models when storage density must increase without adding bays. The jump is worthwhile when the controller and backplane already support 12Gb/s SAS and the workload tolerates mechanical latency. Buyers needing higher IOPS or lower power per terabyte should evaluate solid-state alternatives instead.

How it compares

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

Price $176.99
Pricier than about 65% 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 $44.25 per TB
Cheaper than about 66% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameDell
Model name400-AEQT
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 the 12Gb/s SAS interface work with my existing 6Gb/s SAS controller?

The drive supports 12Gb/s SAS and is backward compatible with 6Gb/s SAS controllers, operating at the controller's maximum speed.

How can I confirm the 7200 RPM spindle speed is active after installation?

Use SMART monitoring tools or the RAID controller BIOS to verify the reported spindle speed matches 7200 RPM during operation.

Does the bare-drive packaging include mounting screws or a SAS cable?

The bare-drive packaging includes only the 3.5" hard drive; mounting hardware and SAS cables must be purchased separately.

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