O'Reilly logo

Microsoft® Exchange Server 2010: Best Practices by Joel Stidley, Siegfried Jagott

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Availability Planning for Mailbox Servers

In addition to normal IT best practices and redundant hardware, the DAG is the primary high-availability option for Exchange 2010 Mailbox servers. A DAG is a collection of servers that provides continuous replication and availability for mailbox databases, as shown in Figure 11-1.

A Database Availability Group

Figure 11-1. A Database Availability Group

Continuous replication creates a passive database copy on another Mailbox server in the DAG, and then uses asynchronous log shipping to maintain the copies.

The continuous replication process follows these steps:

  1. The active transaction log is written and then closed.

  2. The Microsoft Exchange ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required