November 2010
Intermediate to advanced
1248 pages
45h 18m
English
Content preview from Microsoft® Exchange Server 2010 Inside OutBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Datacenter Activation Coordination
Some DAGs will be deployed across datacenters in multiple sites. These environments create a specific problem when catastrophic hardware failures occur that knock several servers out across multiple datacenters. Normally, when multiple servers in a DAG are affected, the DAG stays offline until the majority of the servers are restored to good health and come online again and the cluster is able to establish a quorum. At this point, Active Manager attempts to restart DAG operations and mount databases to recover from the failure.
If all goes well, the databases will come back online and all the servers will be able to communicate with each other. However, if communications between the datacenters are not available, ...
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