Verdict

For a NAS cache or write-heavy pool, the WDS100T1R0A is the safer pick - the MZ-77Q1T0 uses QLC NAND, which wears out faster and slows badly under sustained writes (light, read-mostly use only).

MZ-77Q1T0
Samsung 870 QVO · 1TB · Desktop
£249 (£249.00/TB)
WDS100T1R0A
WD Red SA500 · 1TB · NAS
£200 (£199.99/TB)

Value at a glance

Price / TB
MZ-77Q1T0 $316.23
WDS100T1R0A $17.26
Endurance (TBW)
MZ-77Q1T0 360 TB
WDS100T1R0A 600 TB

Price history

UK · cheapest per day

MZ-77Q1T0 £249 WDS100T1R0A £200
zoomed · drag to zoom
£300 £173 £47 Aug 2024 Jan 2025 Jun 2025 Nov 2025 Mar 2026 Aug 2026
MZ-77Q1T0 WDS100T1R0A
Capacity 1 TB 1 TB
Form factor 2.5 2.5
Interface SATA SATA
NAND type QLC TLC
Endurance (TBW) 360 TB 600 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write 80 MB/s -
Cost / TBW $0.878 $0.029
Price / TB $316.23 $17.26
Buy
£249
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£200
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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.

MZ-77Q1T0

No Backblaze failure data for this model.

WDS100T1R0A

No Backblaze failure data for this model.