I have 51 databases in our Exchange 2010 SP2 Rollup 6 environment. Basically we have six mailbox servers where there are three pairs. Server 1 and Server 2 have copies of the first 17 databases, Server 3 and Server 4 have databases 18-35, and server 5 and 6 have copies of databases 36-51.
One of our databases consumes about 80% of a server so we cannot have more than that one database hosted on the server. If I move the other databases over to the other (passive)server, it runs about about 75%, while the other server with that 1 active database runs at 80%.
Where do I begin troubleshooting this? The users on this one database are either Macintosh clients or Outlook clients in Online mode. Is there any documentation about how much server resources the Macintosh clients consume? From what I'm seeing they are really killing our environment, to the point of where I am almost ready to dedicate a server specifically to them and bill them differently.
I do have Exmon installed and have discovered some individual user issues but nothing that would help with this database issue overall.
I began moving users off of this one database and spreading them across all other databases and started to see a reduction in CPU load.
Any perfmons I can look at specifically on that one database to verify the database is healthy? Replication is good, backups are completing. I just find it hard to understand why a server with 242 people (MAC clients and Outlook online) connecting to it, works harder than a server with 837 users (Outlook Cached) connecting to it. But the 242 users also have iPADs that are not showing up with Exmon, correct?
Jason Meyer