Seagate IronWolf Pro 28 TB

NAS HDD

Part number ST28000NT000 - 4AB103-500 · IronWolf Pro series · 3.5'' SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.

IronWolf ProNAS HARD DRIVE3.5" SATA HDDSEAGATE

Part of the Seagate IronWolf Pro series →

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15
Compatible NAS models
0 Syn · 0 QNAP · 15 Asus · 0 TM
By vendor
28 TB
Listed capacity
Seagate
Manufacturer
NAS Pro tier
Product line (manufacturer rating)
7200
Spindle speed (RPM)
CMR
Recording
256 MB
Cache
300 TB
Rated workload / year

Specifications are the manufacturer's published ratings for this product series; verify the exact part number before purchase.

Strong pick as a cold 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.

Compatibility verdict

It appears on the official compatibility lists of 15 machines and series — 15 Asustor. 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

Asustor AS 11 See its full HCL → Asustor AS 11TL See its full HCL → Asustor AS 12 See its full HCL → Asustor AS 33 See its full HCL → Asustor AS 33 v2 See its full HCL → Asustor AS 52/53 See its full HCL → Asustor AS 54 See its full HCL → Asustor AS 65 See its full HCL → Asustor AS 65R See its full HCL → Asustor AS 66 See its full HCL → Asustor AS 67 See its full HCL → Asustor AS 68 See its full HCL → Asustor AS 71 See its full HCL → Asustor AS 71R See its full HCL → Asustor AS 72R See its full HCL →

Same-capacity alternatives

Other drives listed at 28 TB capacity, ranked by how many machines list them:

Seagate ST28000NT000 90 machines · IronWolf Seagate ST28000NM003K 88 machines · EXOS TM Seagate ST28000NM003K - 3TE133 11 machines · Exos M WD WUH723228BLE6L4 3 machines · Ultrastar DC HC5090

Quick answers

Is the ST28000NT000 - 4AB103-500 officially compatible with my NAS?

It appears on the official compatibility lists of 15 machines and series — 15 Asustor. Every machine page linked below shows the vendor's own list entry, refreshed daily.

Is the ST28000NT000 - 4AB103-500 CMR or SMR?

As a Seagate IronWolf Pro 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 ST28000NT000 - 4AB103-500 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 ST28000NT000 - 4AB103-500 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 ST28000NT000 - 4AB103-500?

At the same capacity, the most widely listed alternatives are Seagate ST28000NT000 (90 machines), Seagate ST28000NM003K (88 machines), Seagate ST28000NM003K - 3TE133 (11 machines). The full ranked list is below.