WD Ultrastar DC HA340 10 TB
Enterprise HDD
Part number WUS721210BLE6L4 · Ultrastar DC HA340 series · 3.5'' SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.
Part of the WD Ultrastar DC HA340 series →
Check WUS721210BLE6L4 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 13 machines and series — 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 10 TB capacity, ranked by how many machines list them:
Quick answers
Is the WUS721210BLE6L4 officially compatible with my NAS?
It appears on the official compatibility lists of 13 machines and series — 13 Asustor. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the WUS721210BLE6L4 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 WUS721210BLE6L4 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 WUS721210BLE6L4?
At the same capacity, the most widely listed alternatives are Seagate ST10000NM0086 (367 machines), Toshiba MN06ACA10T (343 machines), Toshiba HDWG11AXZSTA (326 machines). The full ranked list is below.