E2K3 15,000 users, 14 DB x 200GB each, SIS average 2.43
-----Original Message-----
From: Ben Scott [mailto:mailvor...@gmail.com]
Sent: Saturday, 30 May 2009 3:31 AM
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
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