Verdict

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

WD102KRYZ
WD Gold · 10TB · Enterprise
No FR price yet
WUS721010ALE6L4
WD Ultrastar DC HC330 · 10TB · Enterprise
€747 (€74.74/TB)

Value at a glance

Price / TB
WD102KRYZ $61.90
WUS721010ALE6L4 $39.69
Capacity
WD102KRYZ 10 TB
WUS721010ALE6L4 10 TB

Price history

FR · cheapest per day

WD102KRYZ €777 WUS721010ALE6L4 €747
zoomed · drag to zoom
€778 €528 €279 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Nov 2026
WD102KRYZ WUS721010ALE6L4
Capacity 10 TB 10 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 256 MB 256 MB
Noise (idle) 20 dB -
Fill Helium Air
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $61.90 $39.69
Buy No FR price yet
€747
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.

WD102KRYZ

No Backblaze failure data for this model.

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

WUS721010ALE6L4

No Backblaze failure data for this model.

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