


In addition, you can mix and match copies of databases stored on each server. DAGs along with other features (such as Cluster Continuous Replication) ensure high availability of user mailboxes even in Exchange downtime situations. It enables you create a setup of multiple servers that host copies of individual databases. One of the most fundamental features is Data Availability Groups (DAGs). In this time the Information Store process was made aware of the newly created database allowing for the mount request from the Replication Service to be processed successfully.Įnter your email address to subscribe to this blog and receive notifications of new posts by email.Microsoft has made some major enhancements in Exchange Server 2010 over its earlier versions. The same results may be observed when using the ECP. C:>Get-MailboxDatabase Test -Status | fl name,*mounted*

The wait time may be longer depending on the amount of time it takes domain controllers to successfully replicate the database object. This ultimately returns an error to the Replication Service which is subsequently returned to the administrative endpoint where the mount was issued (PowerShell / ECP).Īfter waiting a few minutes the database can be successfully mounted. In this instance the Replication Service is aware of the presence of the database, but the Information Store process is not.

The Replication Service then send a notification to the Information Store process to perform the mount. In the case of a Database Availability Group the command is referred to the Primary Active Manager and then passed to the Replication Service of the node owning the active mailbox database copy. When a mount command is issued the command is referred to the Active Manager process on the server. This error may occur more often when creating a database and checking the mount this database option (checked by default). + CategoryInfo : InvalidOperation: (Test:ADObjectId), InvalidOperationException Error: Couldn't find the specified mailboxĭatabase with GUID '1a5e5284-a2d3-4241-a31a-fa0023fdc0e4'. Error: An Active Manager operation failed. Some administrators have noted that if you attempt to create a new database and immediately mount it – it fails with the following error:įailed to mount database "test". This will subsequently replicate to all other domain controllers. When administrators create a new mailbox database an entry is created in the database configuration container within Active Directory. This process runs within the Exchange Replication Service. Every server, both standalone and members of Database Availability Groups, have an Active Manager process. The Active Manager process works with the Information Store process to complete these requests. In Exchange 2010 and newer the Active Manager process is now responsible for tracking the creation of mailbox databases and performing mount / dismount operations. In versions prior to Exchange 2010 the Information Store process on a server was solely responsible for tracking the creation of mailbox databases and performing mount and dismount operations. In Exchange 2010 and Exchange 2013 the process of mounting a database has changed since Exchange 2007.
