NAS pSEO Landing
Region Focus · APAC
Estimate usable TB, parity, and fault tolerance for APAC homelab buyers using 8x 8TB in RAID-Z1.
Raw Capacity
64.00 TB
Usable Capacity
50.40 TB
Fault Tolerance
1 drive
Efficiency
87.5%
ZFS single-parity equivalent of RAID 5; common for smaller homelab pools. This scenario applies a 10% filesystem reserve.
Run Interactive Calculator →| Mode | Usable | Tolerance | Efficiency |
|---|---|---|---|
| RAID 5 | 50.40 TB | 1 drive | 87.5% |
| RAID 6 | 43.20 TB | 2 drives | 75.0% |
| RAID 10 | 28.80 TB | 1 drive per mirror pair* | 50.0% |
| RAID-Z1 | 50.40 TB | 1 drive | 87.5% |
| RAID-Z2 | 43.20 TB | 2 drives | 75.0% |
APAC builders frequently compare availability windows and procurement variance, which makes robust fallback capacity and staged scaling useful in practice.
Regional differences in disk availability and replacement lead times.
Policy of keeping spare disks available to reduce recovery delay risk.
It can be practical, but larger drives increase rebuild windows. Validate parity choice and backup policy before committing to the final layout.
For APAC homelab buyers, this NAS planning scenario estimates 50.40 TB usable after a 10% reserve from 64.00 TB raw.
This setup can tolerate 1 drive. Real-world survivability depends on mirror placement, rebuild stress, and drive health.
No. Use this page for pre-purchase sizing, then validate with workload benchmarks, SMART health policy, and a tested restore plan.