man snap
-b Gather SSA Adapter/Disk information.
-B Skip SSA adapter dump collection when -b is specified.
-L Gather logical volume manager (LVM) information.
-h Gather Hardware information.
-e Gather HACMP information.
-m node name list [separated by ,] to gather HACMP information.
-c Create snap.pax.Z file.
-o Send information to removable output device (/dev/rfd0).
-d Directory to put information (/tmp/ibmsupt).
-r Remove directory (/tmp/ibmsupt).