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Western Digital

Western Digital WDS100T1R0A 1TB WD Red NAS SSD

★★★★★4.7 (1996 reviews)
4K8K

A purpose-built 1TB NAS SSD with 3D NAND endurance for always-on caching and storage acceleration.

$458.05*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Western Digital WDS100T1R0A WD Red SA500 is a 1TB SATA SSD engineered specifically for network-attached storage systems. Unlike consumer SSDs that are optimized for bursty desktop workloads, the Red SA500 is built to handle the sustained read and write demands of a 24/7 NAS environment. Western Digital's 3D NAND technology underpins the drive's endurance, allowing it to serve as an SSD cache that accelerates access to hot data—frequently opened files, database records, thumbnail previews, and project assets—without wearing out prematurely under constant I/O.

With sequential read speeds up to 560 MB/s on a SATA III 6 Gb/s interface, the SA500 delivers the maximum throughput the bus allows, reducing latency for OLTP databases, multi-user file sharing, photo rendering pipelines, and 4K/8K video editing workflows. Its 2.5-inch 7mm form factor slides into standard NAS drive bays, and Western Digital's included data recovery service adds a layer of protection for the data stored on the drive. For home and small-business NAS users looking to meaningfully improve responsiveness without migrating to a more complex NVMe setup, the Red SA500 is a focused, purpose-built upgrade.

Key Features

Storage optimized for caching in NAS systems to rapidly access your most frequently used files.

Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment.

Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users.

Reduces latency and improves responsiveness for oltp databases, multi-user environments, photo rendering, 4K and 8K video editing, and more.

Specifications

Capacity
1TB
Form Factor
2.5" / 7mm
Interface
SATA III 6 Gb/s
NAND Type
3D NAND
Max Sequential Read
Up to 560 MB/s
Hard Disk Interface
Serial ATA-600
Compatible Devices
Desktop / NAS
Special Feature
Data Recovery Service

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Pros & Cons

👍 Pros

  • Rated for 24/7 operation with endurance tuned for the heavy read/write cycles typical of NAS workloads.
  • Sequential read speeds up to 560 MB/s maximize the SATA III interface for fast file and cache access.
  • Western Digital 3D NAND technology provides a proven reliability foundation for always-on environments.
  • Standard 2.5-inch 7mm form factor fits virtually any NAS bay or adapter bracket without compatibility issues.

👎 Cons

  • Uses the SATA III interface, which caps throughput well below what NVMe drives can achieve.
  • The 1TB capacity may fill quickly in NAS systems handling large media libraries or extensive surveillance footage.
  • Does not include hardware encryption, which some enterprise NAS administrators may require.
  • Performance gains are most noticeable as a cache drive; as sole storage, a NAS still depends on traditional drives for bulk capacity.

Frequently Asked Questions

It is designed as a caching drive in NAS systems, accelerating access to frequently used files. It can also serve as primary storage in a NAS for workloads like databases, photo rendering, and video editing.
Yes, it uses a standard 2.5-inch 7mm SATA III interface, so it physically fits in any system with a 2.5-inch bay. However, its endurance profile and firmware are optimized for the continuous read/write demands of NAS environments.
The WD Red SA500 1TB is rated for sequential read speeds up to 560 MB/s over its SATA III 6 Gb/s interface.
Yes, Western Digital includes a data recovery service with this SSD.

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