Exchange Server 2003 Database size limit 18gig to 75gig

21 Nov 2009

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	Exchange Server 2003 Database size limit 18gig to 75gig

Solution How to increase the Exchange Server 2003 Service Pack 2 18-gigabyte database size limit.

Important This article contains information about how to modify the
registry. Make sure that you back up the registry before you modify it.
Make sure that you know how to restore the registry if a problem occurs.
For more information about how to back up, restore, and modify the
registry, click the following article number to view the article in the
Microsoft Knowledge Base:
256986 (http://support.microsoft.com/kb/256986/) Description of the Microsoft Windows registry

INTRODUCTION
New functionality has been included with Microsoft Exchange Server 2003 Service Pack 2 (SP2). You can
now configure database size limits.
The database size limits for Microsoft Exchange Server 2003 Standard Edition have been increased from 16
GB to 18 GB. The limit can be increased to as much as 75 GB by using a registry key.
Microsoft Exchange Server 2003 Enterprise Edition does not have a maximum database size limit.
For more information about how to set the database size limit, see the Exchange Server 2003 Help topic.
The Help topic was updated during the installation of Exchange Server 2003 SP2.

MORE INFORMATION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.
To increase the Exchange Server 2003 SP2 database size, follow these steps.
Important Before you increase the maximum size of an Exchange database, verify that sufficient hard disk
space is available for the larger database.
Article ID : 912375
Last Review : May 22, 2007

Revision : 5.0
1. On the computer that is running Exchange 2003 SP2, click Start, click Run, type regedit, and then
click OK.
2. Click one of the following registry subkeys, as appropriate for the store that you want to increase:
â€¢ For a mailbox store, click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\
Server name\Private-Mailbox Store GUID
â€¢ For a public folder store, click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\
Server name\Public-Public Store GUID
3. On the Edit menu, point to New, and then click DWORD Value.
4. In the New Value #1 box, type Database Size Limit in Gb, and then press ENTER.
5. Right-click Database Size Limit in Gb, and then click Modify.
6. Click Decimal, and then type an integer from 1 to 75 in the Value data box.
Note These integer values represent the maximum size of the database in gigabytes (GB). For
example, a value of 75 represents a database that has a maximum size of 75 GB.
7. Click OK, and then exit Registry Editor.
8. Restart the Microsoft Exchange Information Store service. To do this, follow these steps:
a. Click Start, click Run, type cmd, and then click OK.
b. At the command prompt, type the following command, and then press ENTER:
net stop msexchangeis
c. After the Microsoft Exchange Information Store service has stopped successfully, type the
following command, and then press ENTER:
net start msexchangeis
9. Examine the Application log to verify that the database size has been set successfully. To do this,
follow these steps:
a. Click Start, click Run, type eventvwr, and then click OK.
b. In the Event Viewer tool, click Application.
How to increase the Exchange Server 2003 Service Pack 2 18-gigabyte database size limit Page 1 of 2
http://support.microsoft.com/kb/912375/en-us 6/27/2007
For more information about how to configure the new database size limit when you use Exchange Server
2003 SP2, visit the following Microsoft Web site:
http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3TechRef/6c4ce7bb-5289-422
1-a87c-b9c78ab7c09c.mspx (http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3TechRef/6c4
ce7bb-5289-4221-a87c-b9c78ab7c09c.mspx)
For more information about how to temporarily increase the database size in Exchange Server 2003 Service
Pack 1 or an earlier version of Exchange Server 2003, click the following article number to view the article
in the Microsoft Knowledge Base:
828070 (http://support.microsoft.com/kb/828070/) Exchange Server Mailbox Store does not mount when
the Mailbox Store database reaches the 16-GB limit
For more information about how to temporarily increase the database size in Exchange 2000 Server, click
the following article number to view the article in the Microsoft Knowledge Base:
813051 (http://support.microsoft.com/kb/813051/) How to temporarily increase the Exchange 2000 16-
gigabyte database size limit
APPLIES TO
c. Double-click event ID 1216 to verify that the database size has been set successfully.

Article Details

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Created On:

27 Jun 2007 09:29 AM