This article covers WD Red SA500 NAS用 SSD 2TB 高信頼性.

Overview

The WD Red SA500 NAS SSD 2TB is a high-reliability SATA 2.5-inch solid-state drive designed by Western Digital for NAS systems. It utilizes the SATA 6Gb/s interface and offers a capacity of 2TB, optimized for 24/7 operation in home and business NAS environments. Positioned as an entry-to-mid-range solution, it prioritizes endurance and stability over raw speed.

Compatibility Guide

This SSD is compatible with any 2.5-inch SATA bay found in most NAS enclosures and PC cases. It supports SATA 6Gb/s and is backward compatible with SATA 3Gb/s ports. Operating system support includes Windows 10 and later, macOS v10.9 and later, and major Linux distributions. Power is supplied via a standard SATA power connector, with low consumption: ~0.07W idle and ~4.0W under active load.

Product Info

The WD Red SA500 features Western Digital 3D NAND flash memory. Endurance is rated at 1,000 TBW (Total Bytes Written), translating to approximately 2.7 years under a 1TB/day write workload. The drive carries a 5-year limited warranty. In the market, it sits in the entry-to-mid-range tier for NAS-specific SATA SSDs, emphasizing reliability and quiet operation.

Best Use Cases

Home users and small offices running a NAS for file sharing, media serving, or backups, who value low power consumption and silent operation. Users upgrading from traditional HDDs in a NAS to improve application responsiveness and reduce latency. * Anyone deploying a dedicated SSD cache in a Synology or QNAP NAS for frequently accessed data.

Things to Consider

The SATA interface limits sequential speeds to approximately 560 MB/s read and 530 MB/s write, significantly slower than NVMe SSDs. The 1,000 TBW rating is adequate for typical home use but may be insufficient for heavy enterprise write workloads. At around ¥88,105 for the 2TB variant, it is more expensive per GB than many consumer SATA SSDs. While it works in standard desktops, it is best suited for NAS environments where its firmware is tuned for 24/7 operation.

Product Disclosure (Amazon)

  • Manufacturer: ウエスタンデジタル(Western Digital)
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0CVMSV5J6
  • Note: This article covers a manufacturer-made product based on Amazon listing details.