Compatible hard drives for TerraMaster D4-321
7 drives are on TerraMaster's official compatibility list for the D4-321 series, up to 32TB listed. Read from terra-master.com, list refreshed 2026-11-03.
Series-level list
This vendor publishes its compatibility list as an advisory tested matrix — drives not on it are not firmware-blocked. Treat the list as a quality signal; off-list drives work but fall outside the tested pairing.
Capacity range on the official list
Where to start on the D4-321
For a home or small-office workload, the NAS lines below balance sustained writes and RAID-rebuild tolerance. Enterprise speed is only worth paying for in full-bay builds:
- Seagate IronWolf — listed in 16 TB price
- Seagate IronWolf — listed in 12 TB price
Full D4-321 compatibility list
Grouped by part number; Max shows the largest capacity TerraMaster lists. Filter by brand, line or capacity:
| Drive | Brand | Series | Line | Type | Max listed |
|---|---|---|---|---|---|
| ST32000NT000 | Seagate | IronWolf Pro | Enterprise | 3.5" SATA HDD | 32 TB |
| ST30000NT011 | Seagate | IronWolf Pro | Enterprise | 3.5" SATA HDD | 30 TB |
| WD260KFGX | Western Digital | WD Red Pro | Enterprise | 3.5" SATA HDD | 26 TB |
| MG11ACA24TE | Toshiba | NL MG11 | Enterprise | 3.5" SATA HDD | 24 TB |
| MG11ACA18TE | Toshiba | NL MG11 | Enterprise | 3.5" SATA HDD | 18 TB |
| ST16000VN003 | Seagate | IronWolf | NAS | 3.5" SATA HDD | 16 TB |
| ST12000VN003 | Seagate | IronWolf | NAS | 3.5" SATA HDD | 12 TB |
Going big on the D4-321?
At the top of the capacity range only enterprise lines are listed. They are built for sustained 7200RPM writes and 24/7 RAID duty — the right choice for a full-bay build:
Security: TerraMaster security & the 2022 RCE chain — TOS 4.2.30+ — check yours.