Maintaining and Troubleshooting

Virtual Memory

Because applications use virtual memory to store instructions and data, problems can occur when there is not enough virtual memory available. To monitor the virtual memory available on your Exchange server, use the server's Monitoring tab to add performance limits. When the amount of available virtual memory falls below a limit you specify, for a duration you specify, the virtual memory monitor is identified on the Monitoring tab with a warning or critical state icon. You can set a limit for a warning state or a critical state, or you can set both limits.

To set limits for available virtual memory:

  1. If you have not already done so, select an Exchange 2000 monitor for Available Virtual Memory, and then click OK
  2. In Virtual Memory Thresholds, in Duration, type the number of minutes that the amount of available virtual memory can be below a specified limit before an icon displays an alert status of warning or critical.
  3. To set a warning state limit, select the Warning state check box, and then select the smallest percentage of virtual memory on which your server can operate before a warning icon is displayed.
  4. To set a critical state limit, select the Critical state check box, and then select the smallest percentage of virtual memory on which your server can operate before a critical state icon is displayed. If you also set a warning limit, the critical limit must be a smaller percentage, because the amount of available virtual memory must be less than the amount you specify for the warning state before the virtual memory can enter a critical state.
  5. Tip   To view the current available virtual memory, on the Monitoring tab, click the Available Virtual Memory monitor you just created, and then check the display in Current available virtual memory.

Related Topics

Monitor a Server