A detailed walkthrough of migrating 18 TB of data from a 4-disk RAIDZ1 ZFS pool to a 7-disk RAIDZ2 pool using only three additional disks. The process involves creating a temporary RAIDZ2 pool with a sparse file as a fake disk, migrating data using ZFS snapshots, destroying the old pool, and expanding the new pool with the
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How I did it 🔗︎Why switch from RAIDZ1 to RAIDZ2? 🔗︎Why is switching from RAIDZ1 to RAIDZ2 hard? 🔗︎Migrating from RAIDZ1 to RAIDZ2: in practice 🔗︎My complete 7x8TB RAIDZ2 pool 🔗︎Sort: