Thanks Brandon- I was completely unaware that you could do that !! This is very helpful info. ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Allen, Brandon Sent: Friday, September 12, 2008 1:16 PM To: Crisler, Jon; exriscer@xxxxxxxxx; Oracle-L Freelists Subject: RE: ORION num_disks Orion does support filesystems and has done so for years. All you have to do is create a file that is a multiple of the block size you'll be testing, e.g.: Create a 4GB file: dd if=/dev/zero of=/u01/oracle/mytest.dbf bs=8k count=524288 Then, put this file in your test.lun file: >cat mytest.lun /u01/oracle/mytest.dbf Then, run orion: orion -run simple -testname mytest -num_disks 1 Regards, Brandon From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Crisler, Jon I just wish Orion would support filesystems rather than raw devices-