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Western Digital HDS724040ALE640 4TB 7200RPM HDD — main product image
Western Digital

Western Digital HDS724040ALE640 4TB 7200RPM HDD

Enterprise-grade 4TB 7200RPM hard drive built for always-on workloads in desktops, NAS, and surveillance systems.

$235.00*
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*Price sourced from Amazon.com. Last updated:Sep 04, 2026.Price and availability are subject to change — details.

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Overview

The Western Digital (HGST) Deskstar HDS724040ALE640 is a 4TB internal hard drive engineered for demanding, always-on environments. Spinning at 7200 RPM with a 64MB cache buffer and a SATA III 6.0 Gb/s interface, it strikes a balance between high capacity and responsive performance that makes it a practical choice for desktop workstations, network-attached storage, RAID configurations, and CCTV surveillance systems. Its enterprise-grade build quality means it is rated for continuous 24/7 duty cycles — a significant advantage over consumer-class drives that may not tolerate sustained workloads.

Packaged as a bare drive in a standard 3.5-inch form factor, the HDS724040ALE640 is compatible with virtually any system that accepts a SATA hard drive, including PCs, Macs, and dedicated storage appliances. Buyers should note that no cables, screws, or accessories are included, and the drive must be formatted through the host operating system before it will appear as available storage. For users seeking dependable bulk storage without the premium cost of solid-state media, this drive delivers proven reliability backed by HGST's long track record in the enterprise storage market.

Key Features

4TB Capacity, 7200RPM Rotation Speed, 64MB Cache,SATA III 6.0Gb,s, Enterprise Grade, Heavy Duty, 3.5Inches Internal Hard Drive, SATA 6.0Gb,s, Designed for 24,7 reliable operation

Works for Desktop PC, Mac, RAID, NAS, CCTV DVR, Surveillance Storage

Bare Drive Only, Single Pack, (No Screws, Cables or Accessories included)

-Friendly Reminder- Please FORMAT HDD on system in order to be detected, shows on system.

Specifications

Capacity
4 TB
Interface
SATA III 6.0 Gb/s
Form Factor
3.5 inch
Spindle Speed
7200 RPM
Cache Buffer
64 MB
Designed Use
24/7 continuous operation
Compatibility
Desktop PC, Mac, RAID, NAS, CCTV DVR
Packaging
Bare Drive Only (Single Pack)

Frequently Asked Questions

Yes. The HDS724040ALE640 is a bare drive and must be formatted through your operating system's disk management utility before it will be detected and usable.
The drive uses a SATA III 6.0 Gb/s interface, which is backward compatible with SATA II and SATA I ports. It fits any standard 3.5-inch drive bay.
Yes. The HDS724040ALE640 is an enterprise-grade drive designed for 24/7 operation, making it well-suited for NAS enclosures, RAID arrays, and continuous-duty applications like CCTV DVR recording.
No. This is a bare drive only — no screws, cables, or accessories are included. You will need to supply your own SATA data cable, power connection, and mounting hardware.
The drive has a 64MB cache buffer, which helps improve read and write performance by temporarily storing frequently accessed data closer to the drive's controller.

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