Exchange Server

This resource contains performance counters specific to the current status of the Exchange Server. The icons of the listed performance counters in the Statistic Name column will change color to reflect the listed counter's current state. Clicking any performance counter in the Statistic Namecolumn will take you to thePerformance Counter Details page for that counter.

If the value of a listed performance counter approaches or crosses the Warning threshold, a yellow band will appear for the listed counter allowing plotted values that cross the threshold to easily be visualized against the yellow band. If the value of a listed performance counter approaches or crosses the Critical threshold, a red band will appear for the listed counter allowing plotted values that cross the threshold to easily be visualized against the red band. Hovering over any time period within the chart will display detailed information about that time period in the tooltip. Hovering over a counter will give you detailed information about that performance counter.

The following table lists the default performance counters for this resource along with their respective definitions and troubleshooting information, including default Warning and Critical thresholds:

Counter Expert Knowledge Warn-
ing
Criti-
cal

RPC Requests failed (%)

Definition: 
Shows the percentage of failed requests in the total number of RPC requests. Failed means the sum of failed with error code plus failed with exception.

Information: 
Should be less than 1 at all times

Possible problems:
Users may report slow performance, disconnects, or failures within their client performing certain activities.

Remediation:
Review the Windows Event logs for any related events. Use ExBPA to perform a Health scan of your server and review any issues reported. In Exchange 2010, verify SP1 or higher has been installed on your system.

> 1

> 1 for 15 polls

RPC Requests Outstanding

Definition: 
Shows the current number of outstanding RPC requests. 

Information:
Should be 0 at all times.

Possible problems:
Server may stop accepting RPC requests.

Remediation:
Review the Windows Event logs for any related events. Use ExBPA to perform a Health scan of your server and review any issues reported. Use Exchange Server User Monitor application to review user sessions. In Exchange 2010, verify SP1 or higher has been installed on your system.

> 0

> 0 for 15 polls

RPC Latency Average (msec)

Definition:
Shows the average latency, in ms, of RPC requests. The average is calculated over all RPCs since exrpc32 was loaded.

Information: 
The average is calculated over all RPCs since exrpc32 was loaded. Should be less than 100 ms at all times.

Possible problems: 
Users may report slow performance issues.

Remediation:
If the disk subsystem is not meeting demand, correcting the problem may require additional disks, faster disks, or modifying the disk configuration.

> 100 ms

> 100 ms for 15 polls

RPC Requests sent/sec

Definition:
RPC Requests sent/sec is the current rate of initiated RPC requests per second.

Information:
Used for determining current load.

N/A

N/A

RPC Slow requests latency average (msec)

Definition:
Shows the average latency, in ms, of slow requests.

Information:
Used for determining the average latencies of RPC slow requests.

Possible problems:
Client disconnects or slow performance issues.

Remediation:
Review the Windows Event logs for any related events. Use ExBPA to perform a Health scan of your server and review any issues reported. In Exchange 2010, verify SP1 or higher has been installed on your system.

N/A

N/A

RPC Slow requests (%)

Definition:
RPC Slow requests (%) is the percent of slow RPC requests among all RPC requests.

Information:
A slow RPC request is one that has taken more than 500 ms.
Should be less than 1 at all times.

Possible problems:
Client disconnects or slow performance issues.

Remediation:
Review the Windows Event logs for any related events. Use ExBPA to perform a Health scan of your server and review any issues reported. In Exchange 2010, verify SP 1 or higher has been installed on your system.

> 1

> 1 for 15 polls

ROP Requests Outstanding

Definition:
ROP Requests outstanding shows the total number of outstanding remote operations requests.

Information:
Used for determining current load.

N/A

N/A

Hub Servers In Retry

(Only available in Exchange 2010)

Definition: 
Shows the number of Hub Transport servers in retry mode.

Information: 
Should be 0 at all times.

Possible problems:
Domain where you send large amount of email is unavailable, infected machine on network sending messages, DNS resolution issues, or network connectivity to destination servers or the internet.
 

Remediation:
Determine the root cause and verify there aren't any network connectivity issues.

> 0.99

> 1

Average Document Processing Time In Milliseconds

Definition:
Shows the average, in ms, of how long it takes to index documents.

Information:
Should be less than 30 seconds at all times.

Possible problems:
Verify content index state of all database copies.

Remediation:
For any database indexes not "healthy," update the content Index on the server using the following command: Update-MailboxDatabaseCopy <DBName> -CatalogOnly

> 30 > 30 for 15 polls

Zooming

You can have the chart show a predetermined time period of data by clicking on any one of the three Zoom buttons in the head of the Zoom column. Alternatively, you can have the chart show a specific date range by dragging the mouse over an area of the chart. The time and date displayed at the top of the resource shows the amount of data currently loaded into the chart. This can be changed by clicking Edit from within the resource.

The Value from Last Poll column shows the most recent data available for the listed statistic.

Additional components on certain resources may be available for addition and/or deletion on the Edit page.