WD161KFGX vs WUH721816ALE6Lx
NAS drive head-to-head - specs, value and live price side by side.
Verdict
These are closely matched NAS drives of the same capacity - decide on price and warranty. Check the live $/TB above.
Value at a glance
Price / TB
WD161KFGX
$44.69
WUH721816ALE6Lx
$44.55
Capacity
WD161KFGX
16 TB
WUH721816ALE6Lx
16 TB
Noise (idle)
WD161KFGX
20 dB
WUH721816ALE6Lx
20 dB
Price history
UK · cheapest per day
WD161KFGX £681
WUH721816ALE6Lx £595
zoomed ·
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| WD161KFGX | WUH721816ALE6Lx | |
|---|---|---|
| Capacity | 16 TB | 16 TB |
| Recording tech | CMR | CMR |
| RAID / NAS safe | Yes | Yes |
| Class | NAS-Pro | Enterprise |
| Spindle speed | 7200 RPM | 7200 RPM |
| Cache | 512 MB | 512 MB |
| Noise (idle) | 20 dB | 20 dB |
| Fill | Helium | Helium |
| Interface | SATA | SATA |
| Failure rate (AFR) | - | 0.64% |
| Price / TB | $44.69 | $44.55 |
| Buy |
£681
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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.
WD161KFGX
No Backblaze failure data for this model.
5yr warranty · 300 TB/yr rated · 1,000,000h MTBF
WUH721816ALE6Lx
0.64% AFR vs 1.41% fleet avg
95% CI 0.60-0.70%
29,797 drives · ~98,164 drive-years · 633 failures · Backblaze lifetime Q2 2026
5yr warranty · 550 TB/yr rated · 2,500,000h MTBF