HGST Enterprise 2TB
Enterprise HDD
Part number HUS724020ALA640 (Ultrastar 7K4000) · Enterprise series · SATA 6Gb/s (SATA III). If your machine is listed below, this drive is officially supported — not a forum workaround.
Part of the HGST Enterprise series →
Check HUS724020ALA640 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 148 machines and series — 148 QNAP. 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 2 TB capacity, ranked by how many machines list them:
Quick answers
Is the HUS724020ALA640 (Ultrastar 7K4000) officially compatible with my NAS?
It appears on the official compatibility lists of 148 machines and series — 148 QNAP. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the HUS724020ALA640 (Ultrastar 7K4000) 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 HUS724020ALA640 (Ultrastar 7K4000) 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 HUS724020ALA640 (Ultrastar 7K4000)?
At the same capacity, the most widely listed alternatives are Western Digital WD2005VBYZ (451 machines), Toshiba MG04ACA200E (416 machines), Seagate ST2000NE0015 (372 machines). The full ranked list is below.