This content is a direct excerpt of Chapters 8 and 9 from the book Microsoft Exchange Server 2013 Inside Out: Mailbox & High Availability (ISBN 9780735678583). This concise ebook is offered independently of the larger book for Exchange administrators seeking specific, focused information on managing the Store and database availability groups (DAG). Directly excerpts Chapters 8 and 9 from the book Microsoft Exchange Server 2013 Inside Out: Mailbox & High Availability Offered as concise, standalone content for Exchange professionals looking for narrowly focused reference or specific problem-solving information on managing the Store and DAG Written by award-winning author Tony Redmond, MVP for Exchange Server.