Toshiba MG05ACA**** 8TB
Enterprise HDD
Part number MG05ACA800E · MG05ACA**** series · 3.5" SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.
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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 393 machines and series — 107 Synology, 231 QNAP, 7 Asustor, 48 TerraMaster. 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. 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 8 TB capacity, ranked by how many machines list them:
Quick answers
Is the MG05ACA800E officially compatible with my NAS?
It appears on the official compatibility lists of 393 machines and series — 107 Synology, 231 QNAP, 7 Asustor, 48 TerraMaster. Every machine page linked below shows the vendor's own list entry, refreshed daily.
Is the MG05ACA800E CMR or SMR?
As a Toshiba MG05ACA**** 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 MG05ACA800E 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. Its series rating is on file as CMR (conventional) — what RAID rebuilds and full-library copies want.
Can I use the MG05ACA800E 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 MG05ACA800E?
At the same capacity, the most widely listed alternatives are Seagate ST8000NM0206 (369 machines), Toshiba MN06ACA800 (347 machines), Seagate ST8000VN0022 (343 machines). The full ranked list is below.