Western Digital Enterprise 1.5TB
Enterprise HDD
Part number WD1503FYYS · Enterprise series · SATA 3Gb/s (SATA II). If your machine is listed below, this drive is officially supported — not a forum workaround.
Part of the Western Digital Enterprise series →
Check WD1503FYYS 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 42 machines and series — 42 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 1.5 TB capacity, ranked by how many machines list them:
Quick answers
Is the WD1503FYYS officially compatible with my NAS?
It appears on the official compatibility lists of 42 machines and series — 42 QNAP. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the WD1503FYYS 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 WD1503FYYS 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 WD1503FYYS?
At the same capacity, the most widely listed alternatives are Seagate ST31500541AS (138 machines), Samsung HD154UI (138 machines), Seagate ST31500341AS (137 machines). The full ranked list is below.