Toshiba N300 12TB
NAS HDD
Part number HDWG21CUZSVA(Bulk) · N300 series · SATA 6Gb/s (SATA III). If your machine is listed below, this drive is officially supported — not a forum workaround.
Part of the Toshiba N300 series →
Check HDWG21CUZSVA(Bulk) price on Amazon partner link
Specifications are the manufacturer's published ratings for this product series; verify the exact part number before purchase.
Rated CMR (conventional magnetic recording) — the right recording type for a large cold copy. CMR keeps a full-library backup pass fast even at 16–24 TB, which is the whole point of the offline slot in a 3-2-1 plan: rotate two drives monthly, keep one powered off, and the backup tooling (Veeam, Duplicati, Hyper Backup, HBS 3) does the scheduling. Full rule and vendor tool table: 3-2-1 for NAS.
Compatibility verdict
It appears on the official compatibility lists of 145 machines and series — 145 QNAP. This is a NAS-class drive: built for 24/7 operation with vibration compensation for multi-bay enclosures — the right tier for most 1-8 bay home or small-office NAS units. Its series rating is on file as CMR (conventional) — what RAID rebuilds and full-library copies want.
Compatible NAS models
Same-capacity alternatives
Other drives listed at 12 TB capacity, ranked by how many machines list them:
Quick answers
Is the HDWG21CUZSVA(Bulk) officially compatible with my NAS?
It appears on the official compatibility lists of 145 machines and series — 145 QNAP. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the HDWG21CUZSVA(Bulk) CMR or SMR?
As a Toshiba N300 drive, it is rated CMR. CMR (conventional magnetic recording) is what a RAID array wants: SMR drives slow rebuilds dramatically. See the <a href="/faq/cmr-vs-smr-nas-drives/">CMR vs SMR guide</a> for the full series table.
Is the HDWG21CUZSVA(Bulk) a good NAS drive?
This is a NAS-class drive: built for 24/7 operation with vibration compensation for multi-bay enclosures — the right tier for most 1-8 bay home or small-office NAS units. Its series rating is on file as CMR (conventional) — what RAID rebuilds and full-library copies want.
Can I use the HDWG21CUZSVA(Bulk) for a 3-2-1 cold backup copy?
Rated CMR (conventional magnetic recording) — the right recording type for a large cold copy. CMR keeps a full-library backup pass fast even at 16–24 TB, which is the whole point of the offline slot in a 3-2-1 plan: rotate two drives monthly, keep one powered off, and the backup tooling (Veeam, Duplicati, Hyper Backup, HBS 3) does the scheduling. Full rule and vendor tool table: 3-2-1 for NAS.
What are alternatives to the HDWG21CUZSVA(Bulk)?
At the same capacity, the most widely listed alternatives are Western Digital WD121KRYZ (381 machines), Toshiba MG07ACA12TE (329 machines), Seagate ST12000NM0008 (315 machines). The full ranked list is below.