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Dell 400-ATJL 1.2TB 2.5
Dell

Dell 400-ATJL 1.2TB 2.5" SAS 12Gb/s Internal Hard Drive

A 1.2TB 10K RPM SAS drive built for enterprise servers that demand fast, reliable storage performance.

$200.00*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Sep 06, 2026.Price and availability are subject to change — details.

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Overview

The Dell 400-ATJL is a 1.2TB 2.5-inch SAS hard drive engineered for enterprise server and storage array deployments where performance and reliability are non-negotiable. With a 10,000 RPM spindle speed and a 12Gb/s SAS interface, this drive delivers the low-latency data access required by database applications, virtualization hosts, email servers, and transactional workloads. The SAS protocol's full-duplex capability and enterprise error-handling features provide an inherent reliability advantage over SATA in multi-drive configurations.

The 2.5-inch small form factor makes this drive an efficient choice for high-density rack environments, allowing administrators to maximize storage capacity per rack unit. At 1.2TB, it provides a practical balance between capacity and performance for mission-critical applications that require fast sequential and random I/O without the premium cost of enterprise SSDs. Designed for compatibility with Dell PowerEdge servers and supported storage platforms, the 400-ATJL is built to operate continuously in demanding data center conditions.

Key Features

High Capacity: 1.2 TB internal hard drive provides ample storage space for your data.

Reliable Performance: SAS interface ensures fast data transfer rates up to 12 GB/s.

Compact Design: 2.5-inch form factor is ideal for desktop computers and laptops.

Sleek and Portable: Slim hard drive is lightweight and easy to carry.

Dell Quality: Trusted brand provides reliable and high-performance storage solutions.

Specifications

Brand
Dell
Model
400-ATJL
Capacity
1.2TB (1200 GB)
Form Factor
2.5"
Interface
SAS 12Gb/s
Rotational Speed
10,000 RPM
Drive Type
Internal Hard Drive

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Frequently Asked Questions

This drive is designed for Dell PowerEdge servers and compatible storage arrays that support 2.5-inch SAS drives with a 12Gb/s interface.
The drive spins at 10,000 RPM, which provides faster data access and lower latency compared to standard 7,200 RPM drives, making it well suited for transactional workloads and database applications.
Hot-swap capability depends on the server chassis and backplane configuration. The 2.5-inch SAS form factor is compatible with most Dell hot-swap drive bays when used with the appropriate drive tray or caddy.
SAS 12Gb/s offers double the bandwidth of 6Gb/s SAS and significantly more than SATA, plus it supports full-duplex communication and is designed for higher reliability in multi-drive enterprise environments.

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