Verdict

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

WUH722222ALE6L4
WD Ultrastar DC HC570 · 22TB · Enterprise
$830 ($37.73/TB)
WUH722422AL5201
WD Ultrastar DC HC580 · 22TB · Enterprise
No US price yet

Value at a glance

Capacity
WUH722222ALE6L4 22 TB
WUH722422AL5201 22 TB
Noise (idle)
WUH722222ALE6L4 20 dB
WUH722422AL5201 20 dB

Price history

US · cheapest per day

WUH722222ALE6L4 $830
zoomed · drag to zoom
$900 $675 $450 Sep 2024 Jan 2025 Jun 2025 Oct 2025 Feb 2026 Jul 2026
WUH722222ALE6L4 WUH722422AL5201
Capacity 22 TB 22 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 20 dB
Fill Helium Helium
Interface SATA SAS
Failure rate (AFR) 0.47% -
Price / TB $37.73 -
Buy
$830
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.

WUH722222ALE6L4

0.47% AFR vs 1.41% fleet avg

95% CI 0.42-0.53%

45,556 drives · ~59,595 drive-years · 282 failures · Backblaze thru Q2 2026

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

WUH722422AL5201

No Backblaze failure data for this model.

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