Mailbox store database file stored on network drive
Topic Last Modified: 2010-07-28
The Microsoft® Exchange Best Practices Analyzer Tool queries the Active Directory® directory service to determine the value for the msExchEDBFile attribute of each mailbox store object. This attribute specifies the location of the database files used by this mailbox store.
The Exchange Server Analyzer also queries Active Directory to determine the count of the values listed in the homeMDBBL attribute of each mailbox store on this server. The count of this attribute represents the number of mailboxes in the mailbox store. The Exchange Server Analyzer can then calculate the total number of mailboxes managed by the server.
If the Analyzer tool finds that the msExchEDBFile attribute starts with "\\" on a computer that is running Exchange Server and that has more than 50 mailboxes, an error is displayed.
This error indicates that the database files for a mailbox store are being stored on a network share. An msExchEDBFile attribute that starts with "\\" indicates that the log file path uses a Universal Naming Convention (UNC) path. We do not recommend this practice because interruptions in network connectivity can cause database errors. This can result in lost data or corrupted databases. It is recommended that you correct this problem as soon as possible.
In Exchange System Manager, expand the Exchange server object on which the store resides, expand the appropriate storage group container, right-click the mailbox store object that you want, and then click Properties.
Specify new file locations on the Database tab of the Properties dialog box.
For more information about how to move the database files to a new drive in Exchange Server 2010, see Move the Database Path.
For more information about Exchange Server database files, see the following Exchange Server 2003 topics:
- Managing Mailbox Stores and Public Folder Stores in the Exchange Server 2003 Administration Guide
- Understanding the Exchange Server 2003 Store in Working with Exchange Server 2003 Stores
For more information about using Exchange Server with network drives, see the following Microsoft Knowledge Base articles:
328879, Using Exchange Server with Storage Attached Network and network-attached storage devices
839687, Microsoft support policy on the use of network-attached storage devices with Exchange Server 2003
317173, Exchange Server and network-attached storage
317172, Exchange Server 5.5 and network-attached storage