Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1
Topic Last Modified: 2009-04-10

This topic explains how to use Registry Editor to configure quotas for named properties and replica identifiers for Microsoft Exchange Server 2007 databases. For more information about named properties and replica identifiers and the effect of their limits on Exchange 2007 databases, see Understanding the Impact of Named Property and Replica Identifier Limits on Exchange Databases.

Before You Begin

To perform this procedure, the account that you use must be delegated the following:

  • Exchange Server Administrator role and local Administrators group for the target server

For more information about permissions, delegating roles, and the rights that are required to administer Exchange 2007, see Permission Considerations.

Caution:
Incorrectly editing the registry can cause serious problems that may require you to reinstall your operating system. Problems resulting from editing the registry incorrectly may not be able to be resolved. Before editing the registry, back up any valuable data.

Procedure

To use the Exchange Management Shell to determine the GUID of the database that you want to configure

  • Run the following command to determine the GUID of the mailbox database that you want to configure. The sample returns the GUID of the mailbox database MBX1 on server Server01.

    Copy Code 
    Get-MailboxDatabase -Identity "Server01\MBX1" | Format-List GUID

  • Run the following command to determine the GUID of the public folder database that you want to configure. The sample returns the GUID of the public folder database PF1 on server Server02.

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    Get-PublicFolderDatabase -Identity "Server02\PF1" | Format-List GUID
    Note:
    Because you can only have one public folder database per server, you do not have to determine the GUID for a public folder database. There will be only one entry in the server's registry with the database type Public.

To use Registry Editor to configure quotas for named properties and replica identifiers for an Exchange 2007 database

  1. Start Registry Editor, and then connect to the registry of the server where the database that you want to configure resides.

  2. Locate the following registry subkey:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\<Database Type-GUID>

    The database type will be Private for a mailbox database and Public for a public folder database. For example, assume that you have a mailbox database named Mailbox Database 1 with GUID 00000000-0000-0000-0000-00000000 on the Exchange server Server01. To configure quotas for this mailbox database, locate the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\Server01\Private-00000000-0000-0000-0000-00000000

  3. Configure the quota for the named properties. To do this, follow these steps:

    1. Right-click <Database Type-GUID>, and then select New | DWORD value.

    2. Name the new DWORD value Named Props Quota.

    3. Right-click Named Props Quota, and then click Modify.

    4. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

      Note:
      You can also enter a decimal value in the Value data text box. To enter a decimal value, you must first select Decimal for the Base option. The valid decimal values are between 1 and 32767.

  4. Configure the quota for the non-MAPI named properties. To do this, follow these steps:

    1. Right-click <Database Type-GUID>, and then select New | DWORD value.

    2. Name the new DWORD value NonMAPI Named Props Quota.

    3. Right-click NonMAPI Named Props Quota, and then click Modify.

    4. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

      Note:
      You can also enter a decimal value in the Value data text. To enter a decimal value, you must first select Decimal for the Base option. The valid decimal values are between 1 and 32767.

  5. Configure the quota for the replica identifiers. To do this, follow these steps:

    1. Right-click <Database Type-GUID>, and then select New | DWORD value.

    2. Name the new DWORD value Replids Quota.

    3. Right-click Replids Quota, and then click Modify.

    4. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

      Note:
      You can also enter a decimal value in the Value data text box. To enter a decimal value, you must first select Decimal for the Base option. The valid decimal values are between 1 and 32767.

  6. Dismount the database for which you configured the named properties and replica identifiers quotas. For detailed steps about dismounting databases, see How to Dismount a Database.

  7. Remount the database. For detailed steps about mounting databases, see How to Mount a Database.

Note:
You must complete all the steps in this procedure to configure the named properties. Make sure that you configure the quota for the named properties, the quota for the non-MAPI named properties, and the quota for the replica identifiers.
Note:
For more information about the Exchange 2007 defaults for quota limits, see the "For More Information" section in this topic.

For More Information

The Named Props Quota, NonMAPI Named Props Quota, and Replids Quota registry values are effective in Exchange 2003.

For more information about how to manage databases, see Managing Storage Groups and Databases.

To learn more about the security and protection features in Exchange 2007, see Security and Protection.

Exchange 2007 defaults for quota limits

Registry Name Default quota limits

Named Props Quota

16K

NonMAPI Named Props Quota

8K

Replids Quota

8K