FMM18127E The host_name host name is not defined on the IBM XIV Storage System.
Explanation
The IBM XIV Storage System was requested to mount a snapshot or volume on a host that it cannot identify.
Operator response
Verify that the BACKUP_HOST_NAME parameter is defined in the IBM Storage Protect Snapshot profile. If applicable, verify that the TAKEOVER_HOST_NAME parameter is defined in the profile. Ensure that the hosts as defined by these parameters are named exactly as defined on the XIV Storage System.