Verdict

These are comparable SSDs. The ZA1000NM1A002 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.

WDS100T4B0E
WD Blue SN5000 · 1TB · Desktop
£179 (£178.95/TB)
ZA1000NM1A002
Seagate IronWolf 125 · 1TB · NAS
No UK price yet

Value at a glance

Endurance (TBW)
WDS100T4B0E 600 TB
ZA1000NM1A002 1,400 TB

Price history

UK · cheapest per day

WDS100T4B0E £179
zoomed · drag to zoom
£179 £176 £173 Aug 21 Aug 26 Aug 31 Sep 5 Sep 10 Sep 16
WDS100T4B0E ZA1000NM1A002
Capacity 1 TB 1 TB
Form factor M.2 2.5
Interface NVMe SATA
NAND type TLC TLC
Endurance (TBW) 600 TB 1,400 TB
DWPD - 0.7
DRAM cache No Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.306 -
Price / TB $183.44 -
Buy
£179
View at Amazon →
No UK 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.

WDS100T4B0E

No Backblaze failure data for this model.

ZA1000NM1A002

No Backblaze failure data for this model.