Western Digital Ultrastar DC HC590 26TB
Enterprise HDD
Part number WUH722626ALE6L4 · Ultrastar DC HC590 series · SATA 6Gb/s (SATA III). If your machine is listed below, this drive is officially supported — not a forum workaround.
Part of the Western Digital Ultrastar DC HC590 series →
Check WUH722626ALE6L4 price on Amazon partner link
No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.
Compatibility verdict
It appears on the official compatibility lists of 106 machines and series — 93 QNAP, 13 Asustor. This is a Enterprise-class drive: rated for heavier sustained workloads than desktop drives. It is a strong pick for a NAS running 24/7, large-array rebuilds or camera workloads, and enterprise lines are also the drives most widely listed across all five vendors' HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.
Compatible NAS models
Same-capacity alternatives
Other drives listed at 26 TB capacity, ranked by how many machines list them:
Quick answers
Is the WUH722626ALE6L4 officially compatible with my NAS?
It appears on the official compatibility lists of 106 machines and series — 93 QNAP, 13 Asustor. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the WUH722626ALE6L4 a good NAS drive?
This is a Enterprise-class drive: rated for heavier sustained workloads than desktop drives. It is a strong pick for a NAS running 24/7, large-array rebuilds or camera workloads, and enterprise lines are also the drives most widely listed across all five vendors' HCLs. No series-level recording rating is on file for this part number yet, so check CMR vs SMR on the exact model before buying for an array.
Can I use the WUH722626ALE6L4 for a 3-2-1 cold backup copy?
No series-level recording rating is on file for this part number yet — check the exact model for CMR vs SMR before buying it as a large cold copy (SMR is the one trait that makes a 16 TB+ backup copy painfully slow). The 3-2-1 guide and the backup tools encyclopedia cover what to schedule it with.
What are alternatives to the WUH722626ALE6L4?
At the same capacity, the most widely listed alternatives are Western Digital WD260KFGX (116 machines), Western Digital WD261KRYZ (93 machines), Western Digital WUH722626ALE6L1 (93 machines). The full ranked list is below.