Western Digital Travelstar 7K1000 1TB
Desktop HDD
Part number HTS721010A9E631 · Travelstar 7K1000 series · 2.5" SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.
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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 2 machines and series — 2 Synology. Check the class badge above: drives tagged NAS or Enterprise are built for 24/7 multi-bay operation. Desktop-class drives often lack vibration resistance and are usually absent from vendor 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 1 TB capacity, ranked by how many machines list them:
Quick answers
Is the HTS721010A9E631 officially compatible with my NAS?
It appears on the official compatibility lists of 2 machines and series — 2 Synology. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the HTS721010A9E631 a good NAS drive?
Check the class badge above: drives tagged NAS or Enterprise are built for 24/7 multi-bay operation. Desktop-class drives often lack vibration resistance and are usually absent from vendor 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 HTS721010A9E631 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 HTS721010A9E631?
At the same capacity, the most widely listed alternatives are Western Digital WD1005VBYZ (451 machines), Seagate ST1000NM0008 (381 machines), Toshiba MG04ACA100N (358 machines). The full ranked list is below.