01-17-2013
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A "LUN" from any SAN device is just a hdisk device for AIX. As you cannot combine several physical hdisks to one with AIX methods (you can create RAID sets, etc., but this still leaves a hdisk to be a hdisk) you can't create a big LUN from several smaller ones likewise.
You can. of course, create a VG and use the space of the hdisks as if it were one.
I hope this helps.
bakunin