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# Set host or host group port flags

Storage hosts are systems that use storage system LUN resources. A logical unit number (LUN) is an identifier that is used for labeling and designating subsystems of physical or virtual storage.

## About this task

To set host or host group port flags:

## Steps

1. Select the storage system.
2. Select Hosts > Hosts.
3. Select a host, click , and then click Set Flags.
4. Optional: Select a host or host group whose flag settings you want to copy from the Copy Flags from Other Host/Host Group drop-down menu.
5. Modify any of the flags, by selecting the corresponding Override option (activating the Enable option) and enable (select) or disable (clear) the flag.
6. Optional: Select Consistent LUNs to specify that LUN values for the host must be kept consistent for all volumes within each masking view of which this host is part. When set, any masking operation involving this host that would result in inconsistent LUN values, is rejected. When not set, the storage system attempts to keep LUN values consistent, but deviates from consistency if LUN conflicts occur during masking operations.
7. Click OK.