Exchange and VSS -- My Exchange writer is in a failed retryable state…

In Exchange 2007 and Exchange 2010 many customers are leveraging VSS based backups to retain and protect their Exchange data.  By default Exchange provides two different VSS writers that share the same VSS writer ID but are loaded by two different services.  The first is the Exchange Information Store VSS writer and the second is…

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Exchange 2010: Adding database copies to databases with a single copy results in copy status failed after seeding is completed…

In recent weeks, I’ve worked with customers that have experienced database copies that go into a failed state immediately after adding a copy.  In all cases the following circumstances were noted:   The database previously only had a single copy. The single copy database had a backup performed on it <or> The single copy database…

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Cluster Core Resources fail to come online on some Exchange 2010 Database Availability Group (DAG) nodes.

Although Exchange 2010 no longer deploys a cluster resource model we still use Windows Failover Clustering service for certain functions. When a Windows 2008 / 2008 R2 cluster is created, the cluster core resources are groups together in the ‘Cluster Group’.  THe Cluster Group is a hidden group that contains the following resources: Cluster Name: …

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Exchange 2010 – File Share Witness oddities…

In Exchange 2010 when a Database Availability Group (DAG) it utilized, and there is an even number of DAG members, the underlying cluster is implemented utilizing the quorum type Node and File Share Majority.  The settings utilized for the File Share Witness are defined on the DAG when the logical DAG object is created and…

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Exchange 2010: Collapsing DAG Networks

As a post configuration step in an Exchange 2010 Database Availability Group installation the administrator may need to collapse Database Availability Group Networks.  Unfortunately this is a commonly missed configuration which results in the replication of log files in an unexpected manner.   Let’s take a look at the following Exchange installation.     In…

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Exchange 2010: Cluster core resources, the replication service, and active manager…

Every Exchange 2010 server has a process internal to the replication service known as Active Manager.  The Active Manager is responsible for all database mount, dismount, and move operations that occur in Exchange 2010. When a server is a standalone server, Active Manager is configured as a Standalone Active Manager.  When a server is a…

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Windows 2008 / Multi-subnet clusters and using static routes.

=========================================================== ***SEE UPDATE*** =========================================================== With the enhancements in Windows 2008 to allow for multi-subnet clustering it is becoming more common to see this utilized with Exchange 2007 SP1 installations.  When implementing a clustered solution, it is a requirement that there be a minimum of two interfaces on each node, and that each node can maintain…

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Exchange and Office 365: Mail Forwarding

Exchange Server and Office 365 offer many different options for forwarding messages to different recipients. Some of these options exist for users and others are for administrators. Administrators can also control how forwarding is handled within the organization.   The forwarding options available to clients and administrators are described below. Each of these methods has…

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Exchange 2010: Log Truncation and Checkpoint At Log Creation in a Database Availability Group

In previous versions of Exchange, when a backup was completed, almost all log files prior to the current log file were truncated from the system.  Administrators monitoring the directory would originally see many logs, and post backup note that only a few logs remained.  In Exchange 2010 Service Pack 1 and later administrators note that…

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Office365: POP and IMAP clients receive OWA links for calendar invitations

As you may know, Office 365 supports a number of different client protocols, including POP and IMAP and a variety of POP and IMAP clients. By default, POP or IMAP clients will be configured to use Outlook Web App (OWA) for handling calendar invitations. When these clients receive a meeting request, within the body of…

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