It is unlikely your storage array has the capability to present a multi-TB lun, or that from an administrative perspective you would want such a thing. ASM would be a fine way to evenly distribute IO across a series of reasonably sized LUNs. I think Paul's point was to not count on the striping from a performance perspective, simply an administrative ones. Matt -- Matthew Zito Chief Scientist GridApp Systems P: 646-452-4090 mzito@xxxxxxxxxxx http://www.gridapp.com -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of ryan_gaffuri@xxxxxxxxxxx Sent: Thu 9/13/2007 12:58 PM To: paul.baumgartel@xxxxxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx Cc: Baumgartel, Paul Subject: RE: ASM IO distribution on a SAN So I don't need to ask the SAN admins to set up a series of LUNs? They can just make me one big mount point for my datafiles and it will be evenly distributed? We may be talking 5 TBs/day of data we are inserting at full deployment plus 4 million queries.