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Rectangular 2.5 inch SATA SSD with black metal casing and label

Western Digital

Western Digital Red SA500 WDS200T1R0A 2TB 2.5" SATA internal SSD

SKU CH-K3S3-ECPBR MPN WDS200T1R0A

2.5-inch SATA SSD with 2TB of 3D NAND storage built for NAS caching, delivering up to 560 MB/s reads and 95,000 random read IOPS with 2M-hour MTTF endurance

  • Total capacity2 TB
  • 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 2TB

  • Optimised for NAS caching to accelerate frequent file access
  • 3D NAND delivers up to 560 MBps sequential read speed
  • Up to 95,000 IOPS random read for responsive multi-user workloads
  • 2M-hour MTTF rating supports continuous 24/7 operation
  • Low idle power draw of 56 mW reduces NAS energy use

NAS-optimised caching drive

The Western Digital Red SA500 WDS200T1R0A is a 2TB 2.5-inch internal SSD built for network-attached storage. It uses 3D NAND and a SATA III interface to accelerate access to frequently used files in home or small-business NAS units. The drive is rated for 24/7 operation with an MTTF of up to 2M hours.

Suited for NAS caching, not primary bulk storage

This SSD targets users who need a high-endurance cache tier for OLTP databases, multi-user workloads, photo rendering or 4K and 8K video editing. It is less appropriate for archival-only arrays where sequential throughput matters more than random IOPS and low latency.

SATA III interface decides compatibility

The drive connects through a standard SATA III port and delivers up to 560 MBps sequential read and 530 MBps sequential write. Random performance reaches 95,000 IOPS read and 85,000 IOPS write. Systems without a 2.5-inch SATA bay or a compatible SATA controller cannot use this drive.

How it compares

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

Price $193.99
Typical for this category: the median of 1,994 items is $180.49.
Total capacity 2 TB
Higher 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 $97.00 per TB
Cheaper than about 86% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineRed SA500
Model nameWDS200T1R0A
Total capacity2 TB
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): 5-12
Active power drawAverage Active Power (mW): 60
Max Read Operating (mW): 3,000
Max Write Operating (mW): 3,800
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100.2 mm
Product weight57.9g
Shipping weight0.06 kg
Package size119 × 102 × 23 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

5 more in the same range

Questions about this item

Will this 2.5 inch drive fit the drive bays in my Synology or QNAP NAS?

The drive uses the standard 2.5 inch SATA form factor, which matches the drive trays in most modern Synology, QNAP, Asustor and TerraMaster NAS units that accept 2.5 inch drives.

Can I use this SSD as a read-write cache to speed up my mechanical NAS volumes?

Yes, the drive is optimized for NAS caching workloads with up to 95,000 random read IOPS and 85,000 random write IOPS to accelerate frequently accessed files and databases.

How much power does the drive draw during heavy write activity?

Maximum write operating power is 3,800 mW, while idle slumber power is 56 mW and DEVSLP drops to 5-12 mW for low standby consumption.

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