C: Moving from Most Recently Used to Another PSP

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  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