- Do not perform these tasks when host I/O is in progress and the LU is in the host-reserved (mounted) status:
- Removing LU paths
- Disabling LUN security on a port
- Changing the data transfer speed for Fibre Channel ports
- Changing AL-PAs or loop IDs
- Changing settings of fabric switches
- Changing the topology
- Change the host modes
- Removing host groups
- Removing iSCSI targets
- Setting command devices
- When adding a LUN path or creating an alternative LUN path, port redundancy must be considered.
Note: If you want to remove a host reservation on an LU that is used in a global-active device pair, make sure to remove the host reservations on both the P-VOL and the S-VOL. If you remove only one host reservation, a Reserve Conflict might occur when the host is replaced.