How to choose a 18-bay NAS in 2026
6 NAS models across 1 vendors ship with 18 drive bays. The table below lists every one of them with its official drive-list depth — read each model page for the vendor's own tested drives.
All 18-bay models, ranked by official drive-list depth
CPU/RAM shown where the vendor publishes them (Synology/QNAP specs); "drives listed" = rows on the vendor's own compatibility tool.
| Model | Vendor | CPU | RAM | Drives listed |
|---|---|---|---|---|
| QNAP TS-h1887XU-RP | QNAP | Intel Xeon E-2334 4C 8T 3.4GHz, up to 4.8GHz | 16 GB ECC DDR4 | 422 |
| QNAP TS-h1886XU-RP R2 | QNAP | — | — | 382 |
| QNAP TES-1885U(QTS) | QNAP | — | — | 285 |
| QNAP TES-1885U(QES) | QNAP | — | — | 196 |
| QNAP TS-h1886XU-RP | QNAP | Intel Xeon D-1622 4-core 2.60 GHz processor, up to 3.2 GHz | 32 GB UDIMM DDR4 ECC | 168 |
| QNAP TS-1886XU-RP | QNAP | Intel Xeon D-1622 4-core 2.60 GHz processor, up to 3.2 GHz | 8 GB UDIMM DDR4 ECC | 137 |
Drives the most 18-bay machines share
Cross-checked against every 18-bay model's official list on this site — the safest part numbers when you're not sure which box you'll end up with:
| Drive | Brand | Series | Listed on | |
|---|---|---|---|---|
| WD1005VBYZ | Western Digital | Gold | 6 of 6 models | price |
| WD2005VBYZ | Western Digital | Gold | 6 of 6 models | price |
| WD121KRYZ | Western Digital | Gold | 6 of 6 models | price |
| HUS728T8TALE6L4 | Western Digital | Ultrastar DC HC320 | 6 of 6 models | price |
| WD4003FRYZ | Western Digital | Gold | 6 of 6 models | price |
| WD6003FRYZ | Western Digital | Gold | 6 of 6 models | price |
| WD2005FBYZ | Western Digital | Gold | 6 of 6 models | price |
| WD8004FRYZ | Western Digital | Gold | 6 of 6 models | price |
| HUS722T2TALA604 | Western Digital | Ultrastar DC HA210 | 6 of 6 models | price |
| ST16000NM001G | Seagate | Enterprise | 6 of 6 models | price |
| ST14000NM001G | Seagate | EXOS x16 | 6 of 6 models | price |
| HUS722T1TALA604 | Western Digital | Ultrastar DC HA210 | 6 of 6 models | price |