# /lib/udev/scsi_id -g -u -d /dev/sda

3600508b40010687200013000002e0000

# /lib/udev/scsi_id -g -u -d /dev/sdb

3600508b40010687200013000002e0000

# /lib/udev/scsi_id -g -u -d /dev/sdc

3600508b40010687200013000002e0000

3600508b40010687200013000002e0000 dm-0 HP,HSV210
size=500G features=’1 queue_if_no_path’ hwhandler=’0′ wp=rw
|-+- policy=’round-robin 0′ prio=0 status=active
| |- 2:0:1:1 sdb 8:16 active undef running
| - 2:0:2:1 sdc 8:32 active undef running
-+- policy=’round-robin 0′ prio=0 status=enabled
`- 2:0:0:1 sda 8:0 active undef running

To see your local internal disks

# multipath -v2

Grab the names from here and update your multipath.conf file to blacklist the local disks

# multipath -v3 (debug)

# multpath -v5 (not sure exactly what v5 means, except gives me info about full paths to the SAN and other useful info about the SAN…serial #s etc)