Also take a look at lscfg (better pipe that to more) and then find out dependencies between fcsX, fscsiX and hdisk(s), pdisk(s) or rmt(s)
hdisk -> native (SDD or non-SDD) or MPIO (SDDPCM or AIXPCM) disks
pdisk -> MPIO (e.g. HP-EVA) disk paths
rmt -> tape drives
other (e.g. powerpath: I've got no clue on how that looks in lscfg)
HTH,
p5wizard