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Silver 2.5 inch SATA SSD with SanDisk label

SanDisk

SanDisk WDS500G1R0A-68A4W0 500GB 2.5" SATA internal SSD

SKU CH-8W42-M5JJ4 MPN WDS500G1R0A-68A4W0

A 2.5" SATA SSD with 500GB of 3D NAND storage optimised for NAS caching, delivering 560 MBps read and 530 MBps write speeds

  • Total capacity500 GB
  • Sequential read speedUp to 560 MB/s
  • Sequential write speedUp to 530 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Model 500GB

  • Optimised for NAS caching to accelerate frequent file access
  • High endurance handles heavy 24/7 read and write workloads
  • 3D NAND delivers maximum SATA throughput up to 560 MBps read
  • Low latency improves responsiveness for databases and 4K or 8K video editing
  • 5 inch form factor fits standard NAS drive bays

NAS caching SSD

This 2.5 inch SATA drive is built for network attached storage appliances that need a fast cache tier. It targets home and small business users who want quicker access to frequently used files without moving to a full flash array. The 500GB capacity fits common NAS bays and leaves room for expansion.

SATA III sequential speeds

The controller delivers up to 560 MBps read and 530 MBps write over the SATA III link. Those figures decide whether the drive can saturate the bus during heavy caching workloads. Random performance reaches 95,000 IOPS read and 85,000 IOPS write for mixed metadata traffic.

Suits 24/7 NAS caching, not boot or archive

The firmware and 3D NAND are tuned for constant read write cycles in a NAS cache role. Users needing a primary OS drive or cold archival storage should consider drives optimised for those workloads instead.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $166.99
Typical for this category: the median of 1,994 items is $180.49.
Total capacity 500 GB
Lower than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 560 MB/s
Lower than about 60% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $333.98 per TB
Pricier than about 80% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineRed SA500
Model nameWDS500G1R0A
Total capacity500 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 560 MB/s
Sequential write speedUp to 530 MB/s
Random read (4K)Up to 95,000 IOPS
Random write (4K)Up to 85,000 IOPS
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA III
Power
Idle power drawSlumber (mW): 56
DEVSLP (mW): 5-7
Active power drawAverage Active Power (mW): 52
Max Read Operating (mW): 2,050
Max Write Operating (mW): 3,350
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100.2 mm
Product weight37.4g
Shipping weight0.07 kg
Package size128 × 100 × 25 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-55 °C to 85 °C
Max shock tolerance1,500G @ 0.5 msec half sine
Vibration toleranceOperating: 5.0 gRMS, 10-2000 Hz
Non-operating: 4.9 gRMS, 7-800 Hz
More details
Mean time to failureUp to 2M hours

Other versions of this model

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Questions about this item

What does the 560 MBps sequential read figure mean once this drive is installed in a real NAS?

In a NAS the 560 MBps sequential read speed lets the cache serve hot files to multiple users at near-wire SATA speeds, cutting latency for OLTP databases, photo rendering and 4K or 8K video editing workloads.

The drive uses SATA III — what does that interface cap in practice?

SATA III caps the drive at 6 Gbps, so the 560 MBps read and 530 MBps write ratings are the practical ceiling you will see in any 2.5-inch bay that supports the standard.

What does the 2.5-inch form factor need to fit or mount in a NAS?

The 2.5-inch form factor fits standard drive trays or sleds in modern NAS units; no extra adapter is required beyond the bay that accepts 2.5-inch SATA drives.

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