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

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

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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Pros & Cons

👍 Pros

10,000 RPM spindle speed delivers lower latency than standard 7,200 RPM enterprise drives
SAS 12Gb/s interface provides high throughput and full-duplex data transfer for server workloads
1.2TB capacity offers substantial storage in a compact 2.5-inch form factor
Enterprise-grade design built for 24/7 operation in server and storage array environments
2.5-inch small form factor allows higher drive density in rack-mounted server chassis

👎 Cons

Mechanical drive is slower than enterprise SSDs for random read/write intensive workloads
10K RPM drives generate more heat and noise than lower-speed or solid-state alternatives
1.2TB capacity may be limiting for large-scale data storage compared to higher-capacity 3.5-inch drives
Requires a compatible SAS controller and drive caddy, which may not be included

Frequently Asked Questions

What type of servers is this Dell 400-ATJL hard drive designed for?

This drive is designed for Dell PowerEdge servers and compatible storage arrays that support 2.5-inch SAS drives with a 12Gb/s interface.

What is the rotational speed and how does it affect performance?

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.

Does this drive support hot-swapping?

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.

What is the SAS 12Gb/s interface advantage over SATA?

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.