← NAS & RAID Calculator

NAS pSEO Landing

6x 10TB RAID-Z1 NAS Calculator | Usable TB

Estimate usable TB, parity overhead, and fault tolerance for 6x 10TB in RAID-Z1. Includes reserve planning for NAS and homelab arrays.

Capacity Snapshot

Raw Capacity

60.00 TB

Usable Capacity

45.00 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 →

Alternative Mode Comparison

Mode Usable Tolerance Efficiency
RAID 5 45.00 TB 1 drive 83.3%
RAID 6 36.00 TB 2 drives 66.7%
RAID 10 27.00 TB 1 drive per mirror pair* 50.0%
RAID-Z1 45.00 TB 1 drive 83.3%
RAID-Z2 36.00 TB 2 drives 66.7%

NAS Cluster Guides

NAS Hub RAID Level Compare RAID Capacity Matrix Planning Quick Sheet RAID Selector NAS FAQ

Related Long-Tail Calculators

2x 4TB RAID 1 2x 6TB RAID 1 2x 8TB RAID 1 2x 10TB RAID 1 2x 12TB RAID 1 2x 14TB RAID 1 2x 16TB RAID 1 2x 18TB RAID 1 2x 20TB RAID 1 3x 4TB RAID 1 3x 4TB RAID 5 3x 4TB RAID-Z1 3x 6TB RAID 1 3x 6TB RAID 5 3x 6TB RAID-Z1 3x 8TB RAID 1

Sequential Long-Tail Navigation

← Previous: 6x 10TB RAID 10 NAS Calculator | Usable TB Next: 6x 10TB RAID-Z2 NAS Calculator | Usable TB →

FAQ

Should I optimize this 6-drive plan for capacity or resiliency first?

For long-lived NAS pools, resiliency first is usually safer. Capacity can be expanded later, while a risky parity choice can force migration sooner.

Is RAID-Z1 still viable with 10TB drives?

It can be practical, but larger drives increase rebuild windows. Validate parity choice and backup policy before committing to the final layout.

Can this calculator replace real-world benchmark and rebuild testing?

No. Use this page for pre-purchase sizing, then validate with workload benchmarks, SMART health policy, and a tested restore plan.

How much effective storage does 6x 10TB RAID-Z1 provide?

This NAS planning scenario estimates 45.00 TB usable after a 10% reserve from 60.00 TB raw.