Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 141)

Changing An Existing Configuration by Migrating
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Figure 57. RAID Level Migration Example
Typically, a unit is reconfigured with the same or more storage capacity.
Sometimes additional drives are added. The following table shows valid
reconfigurations, some of which will require the addition of more drives.
Table 10: Valid Migration Paths
Destination
Source R0 R1 R5 R6 R10 R50 Single Spare
R0 Yes No Yes Yes Yes Yes No No
R1 Yes No Yes Yes Yes Yes Yes No
R5 Yes No Yes Yes Yes Yes No No
R6 Yes No Yes Yes Yes Yes No No
R10 Yes No Yes Yes Yes Yes No No
R50 Yes No Yes Yes Yes Yes No No
Single Yes Yes Yes Yes Yes Yes No No
Spare No No No No No No No No
Note: Rapid RAID Recovery will be disabled on any unit that is migrated.