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Homelab

RAID and ZFS calculator

How much space an array leaves: RAID 0, 1, 5, 6, 10, ZFS RAIDZ1/2/3 and mirrors: usable TB and TiB, efficiency and how many disks may fail. All levels side by side.

Everything runs in your browser; nothing is sent anywhere.

What to choose

Vendors count terabytes in powers of 1000; the OS shows tebibytes in 1024s, so “8 TB” appears as 7.3 TiB. ZFS also keeps about 3 % in reserve. RAID is not a backup: only a copy on another device protects against deleted files and ransomware.

NAS drives: AliExpress · NAS enclosure: AliExpress

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