The following are the important information store database counters for Microsoft Exchange Server.
| Object | Counter |
| Database: Information Store | File Bytes Read/sec |
| File Bytes Written/sec | |
| Cache % Hit |
Check the amount of disk activity that is generated by the information store. If you add up the read/write counters shown above, you can determine how much of the disk's activity on your information store database drive is due to the information store, and how much is generated by other services that might share the information store drive.