NAS pSEO Landing
Region Focus · APAC
Estimate usable TB, parity, and fault tolerance for APAC homelab buyers using 6x 16TB in RAID-Z1.
Raw Capacity
96.00 TB
Usable Capacity
72.00 TB
Fault Tolerance
1 drive
Efficiency
83.3%
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 | 72.00 TB | 1 drive | 83.3% |
| RAID 6 | 57.60 TB | 2 drives | 66.7% |
| RAID 10 | 43.20 TB | 1 drive per mirror pair* | 50.0% |
| RAID-Z1 | 72.00 TB | 1 drive | 83.3% |
| RAID-Z2 | 57.60 TB | 2 drives | 66.7% |
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.
Keeping free space improves filesystem behavior for snapshots, metadata, and write performance. Full arrays often perform worse and rebuild more slowly.
For long-lived NAS pools, resiliency first is usually safer. Capacity can be expanded later, while a risky parity choice can force migration sooner.
No. Use this page for pre-purchase sizing, then validate with workload benchmarks, SMART health policy, and a tested restore plan.