Thanks Chris (and everyone else) I wasn't especially after numbers; just a feel as to whether people do this sort of thing regularly (or just when there's a whine about peformance). I'm sort of pleased with all the responses. My hunch is that in *general* people don't benhmark their IO performance and when working in a SAN (or I guess other shared storage) environment that DBAs often won't know what the hardware is capable of. On Mon, Jun 11, 2012 at 9:12 AM, Chris Dunscombe <cdunscombe@xxxxxxxxx>wrote: > 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 > > > > > -- Niall Litchfield Oracle DBA http://www.orawin.info -- //www.freelists.org/webpage/oracle-l