== power8 system (real multipath), sdm is an iscsi device (ephemeral root). ==
% for d in /dev/sd?; do x=$(/lib/udev/scsi_id --replace-whitespace --whitelisted -p 0x80 --device=$d); ret=$?; echo "$d [$ret]: '$x'"; done
/dev/sda [1]: ''
/dev/sdb [1]: ''
/dev/sdc [1]: ''
/dev/sdd [1]: ''
/dev/sde [1]: ''
/dev/sdf [1]: ''
/dev/sdg [1]: ''
/dev/sdh [1]: ''
/dev/sdi [1]: ''
/dev/sdj [1]: ''
/dev/sdk [1]: ''
/dev/sdl [1]: ''
/dev/sdm [0]: 'SIET_VIRTUAL-DISK'
% for d in /dev/sd?; do x=$(/lib/udev/scsi_id --replace-whitespace --whitelisted -p 0x83 --device=$d); ret=$?; echo "$d [$ret]: '$x'"; done
/dev/sda [0]: '1IBM_IPR-0_5EC2A90000000080'
/dev/sdb [0]: '1IBM_IPR-0_5EC2A90000000060'
/dev/sdc [0]: '1IBM_IPR-0_5EC2A90000000040'
/dev/sdd [0]: '1IBM_IPR-0_5EC2A90000000020'
/dev/sde [0]: '1IBM_IPR-0_5EC2A900000000C0'
/dev/sdf [0]: '1IBM_IPR-0_5EC2A900000000A0'
/dev/sdg [0]: '1IBM_IPR-0_5EC2A90000000080'
/dev/sdh [0]: '1IBM_IPR-0_5EC2A90000000060'
/dev/sdi [0]: '1IBM_IPR-0_5EC2A90000000040'
/dev/sdj [0]: '1IBM_IPR-0_5EC2A90000000020'
/dev/sdk [0]: '1IBM_IPR-0_5EC2A900000000C0'
/dev/sdl [0]: '1IBM_IPR-0_5EC2A900000000A0'
/dev/sdm [0]: '33000001d00000001'
== SM15K system (from http://pad.lv/1463043) ==
% for d in /dev/sd?; do x=$(/lib/udev/scsi_id --replace-whitespace --whitelisted -p 0x83 --device=$d); ret=$?; echo "$d [$ret]: '$x'"; done
/dev/sda [0]: '35000c5001feb99f0'
/dev/sdb [0]: '35000c5001feb99f0'
% for d in /dev/sd?; do x=$(/lib/udev/scsi_id --replace-whitespace --whitelisted -p 0x80 --device=$d); ret=$?; echo "$d [$ret]: '$x'"; done
/dev/sda [0]: 'SATA_SMvDi02lGylQfF1qi02lGylQfF1qfjGL9Go6'
/dev/sdb [0]: 'SATA_SMvDkoWziOynRqDDkoWziOynRqDDMpLqadMA'