Verdict

These are comparable SSDs. The ZP4000GM3A063 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.

WDS400T4X0E
WD Black SN7100 · 4TB · Desktop
€662 (€165.50/TB)
ZP4000GM3A063
Seagate FireCuda 530R · 4TB · Desktop
€852 (€213.10/TB)

Value at a glance

Price / TB
WDS400T4X0E $134.97
ZP4000GM3A063 $182.65
Endurance (TBW)
WDS400T4X0E 2,400 TB
ZP4000GM3A063 5,050 TB

Price history

FR · cheapest per day

WDS400T4X0E €662 ZP4000GM3A063 €852
zoomed · drag to zoom
€879 €708 €538 Aug 21 Aug 26 Aug 31 Sep 5 Sep 10 Sep 16
WDS400T4X0E ZP4000GM3A063
Capacity 4 TB 4 TB
Form factor M.2 M.2
Interface NVMe NVMe
NAND type TLC TLC
Endurance (TBW) 2,400 TB 5,050 TB
DWPD - -
DRAM cache No Yes
Power-loss protection No No
Sustained write - -
Cost / TBW $0.225 $0.145
Price / TB $134.97 $182.65
Buy
€662
View at Amazon →
€852
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.

WDS400T4X0E

No Backblaze failure data for this model.

ZP4000GM3A063

No Backblaze failure data for this model.