Compatible hard drives for QNAP TS-451S
8 drives are on QNAP's official compatibility list for the TS-451S, up to 6TB listed. Read from qnap.com, list refreshed 2026-11-03.
4-bay Legacy model
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 TS-451S
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:
- Western Digital Red — listed in 6TB price
- Western Digital Red — listed in 4TB price
- Western Digital Red — listed in 3TB price
- Western Digital Red — listed in 2TB price
Full TS-451S compatibility list
Grouped by part number; Max shows the largest capacity QNAP lists. Filter by brand, line or capacity:
| Drive | Brand | Series | Line | Type | Max listed |
|---|---|---|---|---|---|
| WD60EFAX | Western Digital | Red | NAS | SATA 6Gb/s (SATA III) | 6 TB |
| WD40EFAX | Western Digital | Red | NAS | SATA 6Gb/s (SATA III) | 4 TB |
| DT01ABA300V | Toshiba | Surveillance DT01-V | Surveillance | SATA 6Gb/s (SATA III) | 3 TB |
| WD30EFAX | Western Digital | Red | NAS | SATA 6Gb/s (SATA III) | 3 TB |
| DT01ABA200V | Toshiba | Surveillance DT01-V | Surveillance | SATA 6Gb/s (SATA III) | 2 TB |
| WD20EFAX | Western Digital | Red | NAS | SATA 6Gb/s (SATA III) | 2 TB |
| DT01ABA100V | Toshiba | Surveillance DT01-V | Surveillance | SATA 6Gb/s (SATA III) | 1 TB |
| DT01ABA050V | Toshiba | Surveillance DT01-V | Surveillance | SATA 6Gb/s (SATA III) | 500 GB |
Security: QNAP security: DeadBolt history & lockdown — eCh0raix → Qlocker → DeadBolt — what changed.