To display the name of your disk providing the label you used when you created the RAID, issue:
[root@jupiter1-lp1 ~]# iprconfig -c query-array-label foobar /dev/sdb
Now you know the ‘foobar’ disk is the ‘/dev/sdb’ RAID device. (in oder to see what disks are included in this RAID, issue the show-config/show-alt-config command).
NOTE: After a reboot, the label configuration is preserved (even though the device name may change). So it is safe to use the label name on a script or automated procedure. For example, after a reboot:
[root@jupiter1-lp1 ~]# iprconfig -c query-array-label foobar /dev/sde <-- not /dev/sdb anymore, now */dev/sde*, but RAID disks are the same