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RAIDZ Calculator (ZFS)
RAIDZ Type
RAIDZ1 (1 parity)
RAIDZ2 (2 parity)
RAIDZ3 (3 parity)
Number of Drives
Drive Capacity (TB)
Raw Capacity
Usable Capacity (approx)
Parity Overhead
Fault Tolerance
Note: ZFS usable capacity is an estimate and does not include the 1/32 (approx 3%) slop space reservation or metadata overhead.