Hello All Having an issue with one of our Exchange servers. Exchange 2007 SCC Cluster running on Windows 2008 Server and an EMC SAN. Today, between 14.00 - 15.00, Exchange was a little unresponsive for our some users on a specific DB on that server. Here is what I saw: i. CPU/memory usage on server was normal ii. Looking at Event Log, no errors or problems there iii. No other jobs running on Exchange at that time iv. RPC operations/sec shoots up at 14.00 - 15.00 and so does RPC Requests and RPC Latency v. Disk usage (read/writes) for that DB is high at that time Anyone help pinpoint where the problem is?

Are you sharing those disks that host the DB on the SAN with another server/process? or are the disk on dedicated spindles? If shared, what else is using those spindles?Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

Hi We're not sharing those spindles.

Hello, Schdule a downtime to run “ISINTEG –s ServerName –fix –test alltests” to check if there are any issue. Refer the following performance counters to see if there are other abnormal symptoms: http://technet.microsoft.com/en-us/library/bb201689(EXCHG.80).aspx Thanks, Simon