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Practical 365

Migrating from a Single Exchange 2010 Server to High Availability

December 5, 2010 by Paul Cunningham 57 Comments

In this article I describe one method for moving from a single Exchange Server 2010 server into a high availability topology with a CAS array and Database Availability Group.

Exchange Server CAS Array, DAG, Exchange 2010, High Availability

Exchange Recovery: Failed DAG Member in Exchange Server 2010

November 26, 2010 by Paul Cunningham 22 Comments

This tutorial demonstrates the recovery process for removing a failed Mailbox server from a Database Availability Group, reinstalling the server, and returning the DAG to its original state.

Exchange Server DAG, Disaster Recovery, Exchange 2010, Mailbox Server

Unable to Remove Failed Server from DAG in Exchange Server 2010

November 25, 2010 by Paul Cunningham 44 Comments

When an Exchange Server 2010 Mailbox server that is a member of a Database Availability Group has failed, part of the recovery process is to remove it from DAG membership. In some scenarios this process may result in an error.

Exchange Server Clustering, DAG, Disaster Recovery, Exchange 2010

Event ID 2137 and Windows Server Backup Completed with Warnings for Exchange 2010 Mailbox Server

November 24, 2010 by Paul Cunningham 45 Comments

When Windows Server Backup is used to back up an Exchange Server 2010 Mailbox server that a a member of a Database Availability Group the backup result may report “Completed with warnings”.

Exchange Server Backup, DAG, Exchange 2010, Windows Server Backup

How to Reseed a Failed Mailbox Database Copy in Exchange Server 2010

November 18, 2010 by Paul Cunningham 117 Comments

When a mailbox database copy has failed in an Exchange Server 2010 Database Availability Group (DAG) it may be necessary to reseed the mailbox server with the failed database copy.

Exchange Server DAG, Exchange 2010, Mailbox Database, Mailbox Server

How to Rebalance Mailbox Databases in an Exchange Server Database Availability Group

October 31, 2010 by Paul Cunningham 62 Comments

After an outage or maintenance to the Mailbox servers in a Database Availability Group you may find that the mailbox databases are no longer balanced across all of the DAG members.

Exchange Server DAG, Exchange 2010, Exchange 2013, Exchange 2016, Exchange Management Shell, Scripts, SP1

Exchange Server 2010 Database Availability Group Installation Step by Step

October 18, 2010 by Paul Cunningham 219 Comments

Microsoft Exchange Server 2010 introduced a new high availability feature called the Database Availability Group (DAG). This tutorial describes how Database Availability Groups work in Exchange Server 2010, as well as demonstrating the steps for deploying a DAG using Exchange Server 2010 SP1 and Windows Server 2008 R2.

Exchange Server DAG, Exchange 2010, High Availability, Mailbox Server

Exchange Server 2010 High Availability Demonstration Video

September 22, 2010 by Paul Cunningham 7 Comments

In this video I demonstrate the end user experience during different failure scenarios in a highly available Exchange Server 2010 environment.

Exchange Server CAS Array, Clustering, DAG, Exchange 2010, High Availability, Video

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