Thecus N3200XXX Series User Manual page 86

NOTE
With RAID level migration function, the limitation as listed below.
1. During RAID level migration, it is not allowed reboot or shutdown system.
2. The RAID migration from R1 to R5 or R1 to R6, the all services will restart
and volumes "iSCSI" is read only but "user data" is capable read / write
during operation.
NOTE
Migrating a RAID volume could take several hours to complete
The migration scheme below is based on Thecus IP
Storage series products in maximum possible
combination. The other model which has less HDD
supported can refer web UI while RAID migration
operated.
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