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  • Blog Post: CNO Pre Staging (DAGs)

    Hello there, Recently I had been helping a customer in a migration from Exchange Server 2010 to Exchange Server 2013. All went pretty normal, actually some of the steps were easier than I thought they would be, but there was a tiny little (and very annoying) surprise – the DAG creation kept failing…...
  • Blog Post: DAGs Protection Hints – DPM 2010

    DPM 2010 provides node based protection so the state of the database on the node - whether it is an Active copy or a Passive copy of the Exchange 2010 DB does not matter. The state of the database may switch back and forth from Active to Passive, but DPM will continue to protect the DB as long as the...
  • Blog Post: Database Availability Groups

    A database availability group (DAG) is a set of up to 16 Exchange Server 2010 Mailbox servers that provide automatic database-level recovery from a database, server, or network failure.  DAGs use continuous replication and a subset of Microsoft Windows failover clustering technologies to provide...