Verdict

For a NAS cache or write-heavy pool, the WDS200T1R0C is the safer pick - the MZ-77Q2T0 uses QLC NAND, which wears out faster and slows badly under sustained writes (light, read-mostly use only).

MZ-77Q2T0
Samsung 870 QVO · 2TB · Desktop
$490 ($245.00/TB)
WDS200T1R0C
WD Red SN700 · 2TB · NAS
No US price yet

Value at a glance

Price / TB
MZ-77Q2T0 $245.00
WDS200T1R0C $232.86
Endurance (TBW)
MZ-77Q2T0 720 TB
WDS200T1R0C 2,500 TB

Price history

US · cheapest per day

MZ-77Q2T0 $490 WDS200T1R0C $530
zoomed · drag to zoom
$532 $333 $135 Aug 2024 Jan 2025 Jun 2025 Nov 2025 Mar 2026 Aug 2026
MZ-77Q2T0 WDS200T1R0C
Capacity 2 TB 2 TB
Form factor 2.5 M.2
Interface SATA NVMe
NAND type QLC TLC
Endurance (TBW) 720 TB 2,500 TB
DWPD - -
DRAM cache Yes Yes
Power-loss protection No No
Sustained write 160 MB/s -
Cost / TBW $0.681 $0.186
Price / TB $245.00 $232.86
Buy
$490
View at Amazon →
No US 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.

MZ-77Q2T0

No Backblaze failure data for this model.

WDS200T1R0C

No Backblaze failure data for this model.