>>> >>>I'm currently on VXFS. My SA is hot for ASM, I haven't had >>>a chance to do even the smallest bit of research into it. >>>Any words of warning wrt I/O improvements or drop-offs? Well, here we have a topic that should be considered just one of the many reasons to use Direct I/O on all filesystems. ASM is raw disk so you certainly wont have **this** problem--if it is indeed read-ahead oriented. -- http://www.freelists.org/webpage/oracle-l