NAS pSEO Landing
Region Focus · APAC
Estimate usable TB, parity, and fault tolerance for APAC homelab buyers using 8x 12TB in RAID 10.
Raw Capacity
96.00 TB
Usable Capacity
43.20 TB
Fault Tolerance
1 drive per mirror pair*
Efficiency
50.0%
Excellent random I/O and rebuild behavior; capacity is typically 50% of raw. This scenario applies a 10% filesystem reserve.
Run Interactive Calculator →| Mode | Usable | Tolerance | Efficiency |
|---|---|---|---|
| RAID 5 | 75.60 TB | 1 drive | 87.5% |
| RAID 6 | 64.80 TB | 2 drives | 75.0% |
| RAID 10 | 43.20 TB | 1 drive per mirror pair* | 50.0% |
| RAID-Z1 | 75.60 TB | 1 drive | 87.5% |
| RAID-Z2 | 64.80 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.
No. Use this page for pre-purchase sizing, then validate with workload benchmarks, SMART health policy, and a tested restore plan.
It can be practical, but larger drives increase rebuild windows. Validate parity choice and backup policy before committing to the final layout.
Keeping free space improves filesystem behavior for snapshots, metadata, and write performance. Full arrays often perform worse and rebuild more slowly.
For APAC homelab buyers, this NAS planning scenario estimates 43.20 TB usable after a 10% reserve from 96.00 TB raw.