Verdict

These are closely matched NAS drives of the same capacity - decide on price and warranty. Check the live $/TB above.

HAT5310-16T
Synology Enterprise Series · 16TB · Enterprise
No FR price yet
WUH721816ALE6Lx
WD Ultrastar DC HC550 · 16TB · Enterprise
€656 (€40.97/TB)

Value at a glance

Capacity
HAT5310-16T 16 TB
WUH721816ALE6Lx 16 TB

Price history

FR · cheapest per day

WUH721816ALE6Lx €656
zoomed · drag to zoom
€1,110 €714 €318 Sep 2024 Feb 2025 Jul 2025 Nov 2025 Apr 2026 Sep 2026
HAT5310-16T WUH721816ALE6Lx
Capacity 16 TB 16 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) - 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - 0.98%
Price / TB - $43.40
Buy No FR price yet
€656
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.

HAT5310-16T

No Backblaze failure data for this model.

5yr warranty · 550 TB/yr rated · 2,500,000h MTBF

WUH721816ALE6Lx

0.98% AFR vs 1.41% fleet avg

95% CI 0.89-1.08%

29,680 drives · ~44,209 drive-years · 435 failures · Backblaze thru Q2 2026

5yr warranty · 550 TB/yr rated · 2,500,000h MTBF