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Bare 3.5 inch SAS hard drive with silver metal casing and circuit board visible

DELL

DELL 400-ALRS 2TB 3.5" SAS 12Gb/s 7200 RPM internal hard drive

SKU CH-4HX0-6JXCS

A 2 TB 3.5" SAS internal hard drive spinning at 7200 RPM with a 12 Gb/s interface and hot-plug support

  • Total capacity2 TB
  • Interface typeSAS 12Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Mean latency12Gb/s
  • 2 TB capacity stores large datasets and backups
  • 7200 RPM spindle speed delivers responsive data access
  • SAS 12 Gb/s interface provides high-throughput connectivity
  • 5-inch form factor fits standard desktop drive bays
  • Hot-pluggable design allows drive replacement without system shutdown

Purpose-built storage

The Dell 400-ALRS is a 2TB 3.5 inch internal hard drive that uses a SAS 12Gb/s interface and spins at 7200 RPM. It is designed for servers and workstations that need consistent throughput on a nearline workload.

Build and connectivity

The drive ships as a bare 3.5 inch unit with hot-plug capability, so it can be inserted or removed from a compatible bay without powering down the chassis. Its SAS connector supports 12Gb/s signalling and the 512n sector format ensures broad controller compatibility.

Upgrade path

This drive replaces slower nearline SAS units or smaller-capacity 7.2K spindles when capacity and sustained transfer matter. The jump is worth it for arrays that need 2TB of hot-swappable storage on a 12Gb/s backplane.

How it compares

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

Price $169.99
Pricier than about 64% of the 4,938 comparable items (median $107.99).
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $85.00 per TB
Pricier than about 60% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameDell
Model name400-ALRS
Total capacity2 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

Does the SAS 12Gb/s interface cap real throughput below the 12Gb/s line rate?

The Nearline SAS 12Gb/s interface runs at the full 12Gb/s link speed; sustained transfer is limited by the 7200 RPM mechanicals, not the interface itself.

What physical space and mounting does the 3.5" hot-plug drive need?

It fits a standard 3.5" drive bay with a hot-plug carrier; the 512n sector format matches legacy and modern controllers alike.

How is the drive installed and what step do people miss?

Slide the bare drive into the server hot-plug tray, lock the lever, and insert the tray until the latch clicks — forgetting to fully seat the tray is the common error.

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