Verdict

These are comparable SSDs. The WDS100T1R0C 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.

WDS100T1R0C
WD Red SN700 · 1TB · NAS
No CA price yet
WDS100T2X0E
WD Black SN850X · 1TB · Desktop
No CA price yet

Value at a glance

Price / TB
WDS100T1R0C $281.97
WDS100T2X0E $214.81
Endurance (TBW)
WDS100T1R0C 2,000 TB
WDS100T2X0E 600 TB

Price history

CA · cheapest per day

WDS100T1R0C C$500 WDS100T2X0E C$355
zoomed · drag to zoom
C$500 C$307 C$115 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Oct 2026
WDS100T1R0C WDS100T2X0E
Capacity 1 TB 1 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 2,000 TB 600 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.141 $0.358
Price / TB $281.97 $214.81
Buy No CA price yet No CA price yet

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.

WDS100T1R0C

No Backblaze failure data for this model.

WDS100T2X0E

No Backblaze failure data for this model.