Topic Last Modified: 2006-09-06
The Microsoft® Exchange Server Analyzer Tool has determined that your server currently has a higher user load than it can support efficiently. The current user load is causing performance issues. It is recommended that you move users to another location by moving a small number of them (typically five percent of your total users) each night until the performance issues are resolved.
This approach is recommended because one of the following issues has occurred:
- Some Exchange database files are on disks which are at or
beyond the limit of their throughput capacity.
- Other server resources (such as memory or CPU) are over
- A disk is over capacity, which means that the disk subsystem
that currently supports one or more of your Exchange stores has an
average disk I/O latency that exceeds current recommended levels.
You should move five percent of your users to a database on a
different disk subsystem until the problem is resolved. If the
database drives are a bottleneck, move the users to a database that
is located on a different drive. If a storage group drive is the
bottleneck, move the users to a database in another storage group
that is located on another database. If the drives are shared by
another resource, another possible solution is to reduce the load
of other applications on those drives.
- Your physical server is over capacity. You currently do not
have enough processor or memory to support the server load that
your users are generating. You should move five percent of your
users to another server until the performance problems are
|While the Exchange clients are not required to be disconnected from their mailboxes during a move mailbox operation, it is recommended that the move take place when Exchange client activity is low, such as off peak hours, to avoid possible service disruption.|
Start Exchange System Manager on the Exchange Server 2003 computer where you want to run the process.
Double-click Servers, and then locate the server container where the mailboxes of the users are located.
For example, if you want to move mailboxes from the default storage group and mailbox store, double-click First Storage Group, double-click Mailbox Store, and then click Mailboxes.
In the details pane, click the mailboxes you want to move.
Right-click the selected users, and then click Exchange Tasks.
In the Exchange Task Wizard, click Next.
On the Available Tasks page, click Move Mailbox under Select a task to perform, and then click Next.
On the Move Mailbox page, in the Server list, click the server you want, and then, in the Mailbox Store list, click the mailbox store you want.
Configure how you want any corrupted messages that are found during the move to be handled, and then click Next.
For More Information
- For more information about Exchange Server performance, see the
Exchange Server 2003 Performance and Scalability Guide
- For more information about troubleshooting Exchange Server
performance issues, see Troubleshooting Microsoft Exchange
Server 2003 Performance (http://go.microsoft.com/fwlink/?LinkId=47588).
- For more information about moving mailboxes with Exchange
Server 2003, see Microsoft Knowledge Base article 821829, "Moving
Mailboxes in Exchange Server 2003" (http://go.microsoft.com/fwlink/?LinkId=3052&kbid=821829).
- For more information about moving mailboxes between Exchange
2000 Server and Exchange Server 5.5, see Microsoft Knowledge Base
article 328810, "Moving mailboxes between servers" (http://go.microsoft.com/fwlink/?LinkId=3052&kbid=328810).