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Exchange 2010

Applies to: Exchange Server 2010 SP2, Exchange Server 2010 SP3

Topic Last Modified: 2015-03-09

Use the Get-StoreUsageStatistics cmdlet to aid in diagnosing performance issues with your servers or databases. The Microsoft Exchange Information Store collects per-user information on latency, input/output (I/O), page counts, processor usage, and TimeInServer. The TimeInServer metric represents the total time that synchronous and asynchronous requests spend in the Microsoft Exchange Information Store for a user's mailbox. You can retrieve this resource information in the Microsoft Exchange Information Store for the 25 highest usage accounts on a specified database. Usage of a mailbox is defined as the amount of server time spent in performing operations for that mailbox. The cmdlet reports the top 25 users for every one-minute period for the last 10 minutes (250 objects per ten-minute interval). The resource usage is an indicator of the load that different users are placing on the server.

Get-StoreUsageStatistics -Identity <GeneralMailboxIdParameter> [-DomainController <Fqdn>] [-Filter <String>]

Get-StoreUsageStatistics -Database <DatabaseIdParameter> [-DomainController <Fqdn>] [-Filter <String>]

Get-StoreUsageStatistics -Server <ServerIdParameter> [-DomainController <Fqdn>] [-Filter <String>]

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "Mailbox databases" entry in the Mailbox Permissions topic.


Parameter Required Type Description




The Database parameter specifies the name of the mailbox database. When you specify a value for the Database parameter, the Exchange Management Shell returns usage statistics for the top 25 mailboxes on the database specified.

You can use the following value:

  • Database




The Identity parameter specifies a mailbox. When you specify a value for the Identity parameter, the command looks up the mailbox specified in the Identity parameter, connects to the server where the mailbox resides, and returns the statistics for the mailbox. You can use one of the following values:

  • GUID

  • Distinguished name (DN)

  • Domain\Account

  • User principal name (UPN)

  • Legacy Exchange DN

  • SMTP address

  • Alias

Results are returned for the mailbox only if it's one of the top 25 users of store resources.




The Server parameter specifies the server from which you want to obtain mailbox statistics. You can use one of the following values:

  • Fully qualified domain name (FQDN)

  • NetBIOS name

When you specify a value for the Server parameter, the command returns usage statistics for the top 25 mailboxes on all the active databases on the specified server. If you don't specify this parameter, the command returns logon statistics for the local server.




The DomainController parameter specifies the fully qualified domain name (FQDN) of the domain controller that retrieves data from Active Directory.




The Filter parameter indicates the OPath filter used to filter recipients.

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn’t accept input data.

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn’t return data.

This example retrieves resource store statistics for the database MyDatabase01.

Get-StoreUsageStatistics -Database MyDatabase01
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