Exchange 2007 Outlook Anywhere performance issues
Posted on 2012-04-12
I am having performance problems with Outlook Anywhere on Exchange 2007 running on SBS 2008. The server is 64bit with 12GB of RAM. C: drive is on mirrored drives and all data is stored on RAID 5. Everything was working fine until the recently merged several companies together and I put all of them on the server. There are currently 45 users accessing the server using a mixture of ActiveSync and Outlook Anywhere. The ActiveSync clients work fine, but the Outlook Anywhere/RPC over HTTPS performance is horrible. Everything has been configured properly related to access to the server. testexchangeconnectivity.com shows all tests passing. I am monitoring the following using performance monitor....
RPC/HTTP Proxy (Windows Server 2008 Only)
Current Number of Incoming RPC over HTTP Connections
Current number of unique users
RPC/HTTP requests per second
Number of Failed Back-End Connection attempts per Second
RPC Averaged Latency
I don't see anything that looks too bad in these counters. RPC Operations/Sec has gone as high as 600, Current Number of Incoming RPC over HTTP Connections has gone as high as 48. From what I have read neither of these is outrageously high.
Some of the users have been migrating email from .pst to their mailboxes, the Store has gone from 40GB to 51GB in a week. Again not really unusual, but I cant figure out what is causing the connection/slowness problems.
Most client are Outlook 2007/2010.