C: Moving from Most Recently Used to Another PSP

1. On the DataCore Server: Un-serve all virtual disks from the Host.
2. On the Host: Rescan all paths/disk devices so that the virtual disks are cleanly removed.
3. On the Host: Remove the SATP Rule.
4. On the DataCore Server: Check the ALUA box for the host.
5. On the DataCore Server: Re-serve all virtual disks back to the host.
6. On the Host: Configure the host for either Fixed or Round Robin Path Selection Policy as appropriate:
   Round Robin (RR)
   Fixed
7. On the Host: Rescan all paths/disk devices so that the virtual disks are cleanly rediscovered.

Also see:

Changing a LUN to use a different Path Selection Policy (PSP)

Changing multipath or ALUA support settings for hosts