mdadm replace smaller disks with larger ones5 min read

Here’s a quick example to show you. I made a (3) disk RAID5 in VBox with 1GB disks (/dev/sd[bcd]1). Then, I’ll replace each one with 2GB disks (/dev/sd[efg]1). As a sidenote, this is a risky process, and you should have a good, verified backup before you proceed.

Create the array

Add a filesystem

Mount it



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