Backlogged Public Information Store Queue

Run the Performance Monitor chart view Server Queues to determine whether the public information store queue is the bottleneck. This chart view shows how many messages the public information store is delivering to public folders. For example, if it is taking longer than usual for public folder changes to be replicated throughout your system, the following counters will show increased activity:

• MSExchangeIS Public: Send Queue Size
• MSExchangeIS Public: Receive Queue Size

To improve the speed of message processing in the public information store queue do any of the following:

• Configure public folder replication to occur at a less busy time or less frequently.
• Move some or all public folders to another server computer.
• Add more disks to the stripe set.
• Use multiple disk controllers.
• Add one or more caching disk controllers that cache read and write operations.