Therefore, having a number almost double the actual number of mailboxes on the server, while not impossible, would definitely be improbable. TVK
From: Rob Bonfiglio [mailto:robbonfig...@gmail.com] Sent: Friday, May 29, 2009 1:24 PM To: MS-Exchange Admin Issues Subject: Re: Single Instance Storage ratio survey >From the Explain text on the counter: Single Instance Ratio is the average number of references to each message in the mailbox store. On Fri, May 29, 2009 at 2:13 PM, Roger Wright <rwri...@evatone.com<mailto:rwri...@evatone.com>> wrote: I'm seeing 226.771 on my Exchange 2003 box with about 130 mailboxes. Is that probable? Roger Wright Network Administrator Evatone, Inc. 727.572.7076 x388 _____ -----Original Message----- From: Ben Scott [mailto:mailvor...@gmail.com<mailto:mailvor...@gmail.com>] Sent: Friday, May 29, 2009 1:31 PM To: MS-Exchange Admin Issues Subject: Single Instance Storage ratio survey Hi all, A thread on nt-sysadmin has got me wondering. Just how much do people actually benefit from SIS (Single Instance Storage) in Exchange? Would people be willing to share their SIS ratio from their Exchange server(s)? Approximations are fine. For multi-server organizations, an average or just picking a server at random would still inform. I'll start: SIS ratio = 5.6 You can discover the SIS ratio by: 1. Open Performance Monitor (PERFMON.EXE) 2. Select "System Monitor" on the left 3. Right-click the graph on the right, and pick "Add Counters" 4. For "Performance Object", select "MSExchangeIS Mailbox" (or similar) 5. Select the "Single Instance Ratio" counter in the list on the left 6. Select the "_ Total" instance in the list on the right 7. Click "Add" 8. If needed, select the resulting counter in the list at the bottom of the graph 9. Look at the "Last" value reported for that counter -- Ben ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
