Zspace Z4S hard-drive compatibility
极空间 publishes an official compatibility page per model — requirements and recommendations, not a per-drive whitelist. This page mirrors the official rules for the Z4S (Z series, 4-bay class) and cross-references the drives that five major vendors officially list.
30 TB
Max per-drive capacity (official)
4 TB
M.2 SSD ceiling
Official drive requirements
| Item | Official rule (Z4S) |
|---|---|
| Drive bays | 4× 3.5"/2.5" SATA bays (2.5" over 7mm needs bracket) |
| Minimum capacity | 100 GB actual |
| Maximum capacity | 30 TB per drive |
| M.2 NVMe | M.2 fast storage + read-only cache (up to 4 TB) |
| Memory | DDR4-2666+ SODIMM, up to 16 GB (match onboard) |
The official advice, translated
- Standard SATA 3.5"/2.5" drives; on most current models 2.5" drives need no special bracket.
- Avoid SMR (shingled) drives, especially for RAID 1 / RAID 5 — Zspace says the data risk is high. Check any drive's CMR/SMR status on our CMR vs SMR guide.
- For RAID 5, prefer enterprise or NAS-class drives; brand-custom/OEM drives are discouraged (recognition issues).
- Zspace explicitly recommends Seagate IronWolf and WD Red-class NAS drives — the same classes the five HCL vendors certify.
- M.2 slots take NVMe 2280 SSDs up to 4 TB; pick durable (high-TBW) models for cache duty.
Source: Zspace official compatibility page for the Z4S ↗
Drives the other vendors officially list
Zspace names drive classes (IronWolf, WD Red); these are the exact part numbers those classes contain, ranked by how many machines across Synology, QNAP, Asustor, TerraMaster and UGREEN officially list them — the closest thing to a cross-vendor validation of the drives Zspace recommends.
| Drive | Class | Officially listed by |
|---|---|---|
| Western Digital WD4003FFBX | Enterprise NAS | 390 machines/series across 5 vendors |
| Seagate ST4000NE0015 | Enterprise NAS | 379 machines/series across 5 vendors |
| Seagate ST2000NE0015 | Enterprise NAS | 372 machines/series across 5 vendors |
| Western Digital WD141KFGX | Enterprise NAS | 355 machines/series across 5 vendors |
| Toshiba MN06ACA800 | NAS | 347 machines/series across 5 vendors |
| Seagate ST4000NE0025 | NAS | 344 machines/series across 5 vendors |
| Seagate ST6000NE0023 | NAS | 344 machines/series across 5 vendors |
| Toshiba MN06ACA10T | NAS | 343 machines/series across 5 vendors |