NAS Drive Compatibility

Western Digital Surveillance Purple Pro 22TB

Surveillance HDD

Part number WD221PURP-74B9SY0 · Surveillance Purple Pro series · SATA 6Gb/s (SATA III). If your machine is listed below, this drive is officially supported — not a forum workaround.

SurveillanceProNAS HARD DRIVE3.5" SATA HDDWESTERN DIGITAL

Part of the Western Digital Surveillance Purple Pro series →

Check WD221PURP price on Amazon  partner link

22
Compatible NAS models
0 Syn · 22 QNAP · 0 Asus · 0 TM
By vendor
22 TB
Listed capacity
Western Digital
Manufacturer
3-2-1 cold backup fit

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 22 machines and series — 22 QNAP. This is a Surveillance-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

QNAP TS-1232PXU-RP See its full HCL → QNAP TS-1264U-RP See its full HCL → QNAP TS-1273AU-RP See its full HCL → QNAP TS-1277XU-RP See its full HCL → QNAP TS-1673AU-RP See its full HCL → QNAP TS-832PXU See its full HCL → QNAP TS-832PXU-RP See its full HCL → QNAP TS-855eU See its full HCL → QNAP TS-855eU-RP See its full HCL → QNAP TS-864eU See its full HCL → QNAP TS-864eU-RP See its full HCL → QNAP TS-873AeU See its full HCL → QNAP TS-873AeU-RP See its full HCL → QNAP TS-877XU-RP See its full HCL → QNAP TS-h1277AXU-RP See its full HCL → QNAP TS-h1277XU-RP See its full HCL → QNAP TS-h1283XU-RP See its full HCL → QNAP TS-h1677AXU-RP See its full HCL → QNAP TS-h1887XU-RP See its full HCL → QNAP TS-h2287XU-RP See its full HCL → QNAP TS-h3087XU-RP See its full HCL → QNAP TS-h987XU-RP See its full HCL →

Same-capacity alternatives

Other drives listed at 22 TB capacity, ranked by how many machines list them:

Seagate ST22000NT001 148 machines · IronWolf Pro Western Digital WUH722222ALE6L1 121 machines · Ultrastar DC HC570 Western Digital WD221KFGX-68B9KN0 121 machines · Red Pro Seagate ST22000NM001E 121 machines · EXOS X22 Western Digital WD221VRYZ 116 machines · Consumer Gold Western Digital WD221KRYZ 116 machines · Consumer Gold Toshiba MG10AFA22TE 113 machines · MG10F Toshiba MG11ACA22TE 103 machines · MG11 Series

Quick answers

Is the WD221PURP-74B9SY0 officially compatible with my NAS?

It appears on the official compatibility lists of 22 machines and series — 22 QNAP. Every machine page linked below shows the vendor's own list entry, refreshed daily.

Is the WD221PURP-74B9SY0 a good NAS drive?

This is a Surveillance-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 WD221PURP-74B9SY0 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 WD221PURP-74B9SY0?

At the same capacity, the most widely listed alternatives are Seagate ST22000NT001 (148 machines), Western Digital WUH722222ALE6L1 (121 machines), Western Digital WD221KFGX-68B9KN0 (121 machines). The full ranked list is below.