Microsoft Exchange Performance Counters

Microsoft Exchange Mailbox Server Replay Log IO Latency Requirements counters

The following table shows a replay log I/O latency requirements counter. When these values are exceeded, the database copy may lag by not replaying logs to the passive database copy fast enough. Log replication performance may also be affected.

Counter Name Description
Counter Name: MSExchange Database\IO Log Read Average Latency Description: Indicates the average time, in ms, to read data from a log file. Specific to log replay and database recovery operations.