We do for our biggest mission critical app. I look at IOPS, service times and also MB/s, we are running on a SAN Any partticular numbers you're after? Chris ________________________________ From: Niall Litchfield <niall.litchfield@xxxxxxxxx> To: ORACLE-L <oracle-l@xxxxxxxxxxxxx> Sent: Friday, 8 June 2012, 7:03 Subject: I/O performance I'm curious how many of you measure I/O performance ( IOPS, service times and MB/s ) regularly on your databases? And for those in SAN environments if you have access to ballpark figures for what you should be getting. -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l