NAS Drive Compatibility

Seagate IronWolf 18 TB

NAS HDD

Part number ST18000VN000 · IronWolf series · 3.5" SATA HDD. If your machine is listed below, this drive is officially supported — not a forum workaround.

IronWolfNAS HARD DRIVE3.5" SATA HDDSEAGATE

Part of the Seagate IronWolf series →

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48
Compatible NAS models
0 Syn · 0 QNAP · 0 Asus · 48 TM
By vendor
18 TB
Listed capacity
Seagate
Manufacturer
NAS
Product line (manufacturer rating)
7200
Spindle speed (RPM)
CMR
Recording
256 MB
Cache
180 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 48 machines and series — 48 TerraMaster. 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

TerraMaster D16 Thunderbolt 3 See its full HCL → TerraMaster D2-310 See its full HCL → TerraMaster D2-320 See its full HCL → TerraMaster D2 Thunderbolt 3 See its full HCL → TerraMaster D4-300 See its full HCL → TerraMaster D4-320 See its full HCL → TerraMaster D4-320U See its full HCL → TerraMaster D5-300 See its full HCL → TerraMaster D5-300C See its full HCL → TerraMaster D5-310 See its full HCL → TerraMaster D5 Hybrid See its full HCL → TerraMaster D5 Thunderbolt 3 See its full HCL → TerraMaster D6-320 See its full HCL → TerraMaster D8 Hybrid See its full HCL → TerraMaster D8 Thunderbolt 3 See its full HCL → TerraMaster D9-320 See its full HCL → TerraMaster F2-210 See its full HCL → TerraMaster F2-212 See its full HCL → TerraMaster F2-423 See its full HCL → TerraMaster F2-424 See its full HCL → TerraMaster F2-425 See its full HCL → TerraMaster F2-425 Plus See its full HCL → TerraMaster F4-210 See its full HCL → TerraMaster F4-212 See its full HCL → TerraMaster F4-423 See its full HCL → TerraMaster F4-424 See its full HCL → TerraMaster F4-424 Max See its full HCL → TerraMaster F4-424 Pro See its full HCL → TerraMaster F4-425 See its full HCL → TerraMaster F4-425 Plus See its full HCL → TerraMaster F4-425 Pro See its full HCL → TerraMaster F6-424 See its full HCL → TerraMaster F6-424 Max See its full HCL → TerraMaster F6-425 Pro See its full HCL → TerraMaster T12-450 See its full HCL → TerraMaster T12-500 Pro See its full HCL → TerraMaster T6-423 See its full HCL → TerraMaster T9-423 See its full HCL → TerraMaster T9-450 See its full HCL → TerraMaster T9-500 Pro See its full HCL → TerraMaster U12 See its full HCL → TerraMaster U12-500 Plus See its full HCL → TerraMaster U16 See its full HCL → TerraMaster U24 See its full HCL → TerraMaster U4 See its full HCL → TerraMaster U4-500 See its full HCL → TerraMaster U8 See its full HCL → TerraMaster U8-500 Plus See its full HCL →

Same-capacity alternatives

Other drives listed at 18 TB capacity, ranked by how many machines list them:

Seagate ST18000NM000J 211 machines · EXOS x18 Seagate ST18000NE000-2YY101 194 machines · IronWolf Pro Seagate ST18000NT001-3LU101 192 machines · IronWolf Pro Western Digital WUH721818ALE6L4 165 machines · Ultrastar DC HC550 Western Digital WUH721818ALE6L0 162 machines · Ultrastar DC HC550 Western Digital WD181KRYZ 160 machines · Gold Western Digital WD181VRYZ 148 machines · Gold Toshiba MG11ACA18TE 145 machines · MG11 Series

Quick answers

Is the ST18000VN000 officially compatible with my NAS?

It appears on the official compatibility lists of 48 machines and series — 48 TerraMaster. Every machine page linked below shows the vendor's own list entry, refreshed daily.

Is the ST18000VN000 CMR or SMR?

As a Seagate IronWolf 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 ST18000VN000 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 ST18000VN000 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 ST18000VN000?

At the same capacity, the most widely listed alternatives are Seagate ST18000NM000J (211 machines), Seagate ST18000NE000-2YY101 (194 machines), Seagate ST18000NT001-3LU101 (192 machines). The full ranked list is below.