XigmaNAS

Q: What is the best, safe way to enlarge a SoftwareRAID array?
A: The best, safe way is the hard way:

1. Backup your data.
2. Destroy your original array.
3. Add new disk(s), don't forget to format the disk(s) as SoftwareRAID.
4. Create new SoftwareRAID array.
5. Format & mount the array.
6. Restore data from backup.

We do not support of other possible, less than safe options todo this task, for that its stripped away from here.

Please note that if you have a ZFS mirror (RAID1), you can replace one disk at a time with bigger disks, thereby enlarging the array, sometimes without even turning off the system if all your hardware is hot-plug compatible.