Verdict

These are comparable SSDs. The WDS200T2R0A is rated for the most write endurance, so it lasts longest in a NAS that sees steady writes; for light use any is fine and price decides.

WDS200T1X0M
WD Black SN8100 · 2TB · Desktop
$480 ($240.00/TB)
WDS200T2R0A
WD Red SA500 · 2TB · NAS
$611 ($305.32/TB)

Value at a glance

Price / TB
WDS200T1X0M $193.45
WDS200T2R0A $209.54
Endurance (TBW)
WDS200T1X0M 1,200 TB
WDS200T2R0A 1,300 TB

Price history

US · cheapest per day

WDS200T1X0M $480 WDS200T2R0A $611
zoomed · drag to zoom
$856 $503 $150 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Nov 2026
WDS200T1X0M WDS200T2R0A
Capacity 2 TB 2 TB
Form factor M.2 2.5
Interface NVMe SATA
NAND type TLC TLC
Endurance (TBW) 1,200 TB 1,300 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.322 $0.322
Price / TB $193.45 $209.54
Buy
$480
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$611
View at Amazon →

Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price. Buy links are Amazon affiliate.

WDS200T1X0M

No Backblaze failure data for this model.

WDS200T2R0A

No Backblaze failure data for this model.