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Rectangular 2.5 inch SATA SSD with black metal casing and label

SanDisk

SanDisk WDS100T1R0A-68A4W0 1TB SATA internal SSD

SKU CH-0HZE-MDR7M MPN WDS100T1R0A-68A4W0

SATA internal SSD with 1 TB of 3D NAND, up to 560 MBps read and 530 MBps write, built for NAS caching and heavy 24/7 workloads

  • Total capacity1 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 1TB

  • Optimised for NAS caching with up to 560 MBps sequential read
  • Handles heavy 24/7 workloads with up to 2M hours MTTF
  • Low idle draw at 56 mW slumber power
  • High random performance at up to 95,000 IOPS read
  • 3D NAND technology delivers up to 530 MBps sequential write

WD Red SA500 1TB 2.5" SATA SSD

The SanDisk WDS100T1R0A-68A4W0 is a Western Digital Red SA500 internal solid-state drive built for NAS caching. It uses 3D NAND flash and a SATA III 6 Gb/s interface in a 2.5-inch, 7mm form factor. Sequential reads reach up to 560 MBps and writes up to 530 MBps.

Suits NAS caching and mixed read/write workloads

This drive targets home and business NAS owners who need a cache tier for frequently accessed files, OLTP databases, multi-user environments or 4K and 8K video editing. Its 2M-hour MTTF and high endurance rating support 24/7 operation. Systems limited to a single drive bay or requiring boot-only storage should consider a larger-capacity model instead.

SATA III 6 Gb/s interface decides compatibility

The drive connects over a standard SATA III port and will not work in M.2 slots wired for PCIe only. Maximum 4KB random performance is 95,000 read IOPS and 85,000 write IOPS. Active power peaks at 3,750 mW during writes and 2,550 mW during reads, with idle slumber at 56 mW.

How it compares

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

Price $239.99
Pricier than about 61% of the 1,994 comparable items (median $180.49).
Total capacity 1 TB
Typical for this category: the median of 1,368 items is 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 $239.99 per TB
Pricier than about 68% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWestern Digital
Product lineRed SA500
Model nameWDS100T1R0A
Total capacity1 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
Connectivity
Connection protocolSATA
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): 2,550
Max Write Operating (mW): 3,750
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100.2 mm
Product weight37.4g
Shipping weight0.04 kg
Package size124 × 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 the 560 MB/s sequential read speed stay constant during long NAS caching sessions?

Sustained throughput is limited by the SATA III 6 Gb/s interface and the drive's 560 MB/s read ceiling; thermal throttling may reduce speeds once the 70 °C operating limit is reached.

How much heat and power does the drive produce when it runs 24/7 in a NAS bay?

Active power peaks at 3,750 mW during writes and 2,550 mW during reads; idle slumber draws 56 mW and DEVSLP only 5–12 mW, so heat output stays modest inside a 0–70 °C rated enclosure.

Does my NAS need a specific drive bay or caddy to fit this 2.5-inch SATA SSD?

The drive uses a standard 2.5-inch 7 mm SATA form factor, so any NAS bay or caddy that accepts 2.5-inch SATA drives will work without extra adapters.

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