What is database availability group in Exchange 2013?

What is database availability group in Exchange 2013?

A database availability group (DAG) is a set of up to 16 Microsoft Exchange Server 2013 Mailbox servers that provides automatic, database-level recovery from a database, server, or network failure. In addition, the infrastructure that monitors the servers for network or server failures is initiated.

How do I create a database availability group in Exchange 2013?

Use the EAC to create a database availability group

  1. In the EAC, go to Servers > Database Availability Groups.
  2. Click. to create a DAG.
  3. On the new database availability group page, provide the following information for the DAG:
  4. Click Save to create the DAG.

What is Exchange high availability?

Microsoft Exchange Server uses the concept known as incremental deployment for both high availability and site resilience. You simply install two or more Exchange Mailbox servers as stand-alone servers, and then incrementally configure them and mailbox databases for high availability and site resilience, as needed.

What is a dag database?

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

What is Exchange database?

Exchange databases are the physical location where user mailboxes are created and stored. Each user in Active Directory can be assigned one or more mailboxes, which then gets stored as an EDB (Exchange database) file.

What is availability in database?

Data availability is about the timeliness and reliability of access to and use of data. It includes data accessibility. Availability has to do with the accessibility and continuity of information. Information with low availability concerns may be considered supplementary rather than necessary.

Which Web browser is not compatible with Outlook Web App 2013?

In Exchange Server 2013, Outlook Web App relies on the web browser for spell checking, which Internet Explorer prior to version 10 doesn’t provide. Microsoft 365 users will be limited to the light version of Outlook Web App when using Internet Explorer 8.

What is site resilience in Exchange 2013?

Site resilience: A configuration that extends the messaging infrastructure to multiple Active Directory sites to provide operational continuity for the messaging system in the event of a failure affecting one of the sites.

What is site resilience in Exchange 2016?

A solution that provides service availability, data availability, and automatic recovery from failures that affect the service or data (such as a network, storage, or server failure).

What is Exchange 2013 DAG witness server?

Database Availability Group (DAG), a high availability feature for Mailbox servers in Exchange 2013 requires a witness server to maintain a Quorum. Quorum is used by Windows Failover Clustering feature which uses voter count to sustain/function the cluster.

How do I find the witness server in Exchange 2013?

Get DAG witness server Sign in to Exchange Admin Center. Go to servers > database availability groups. Have a look at the DAG witness server in the list view.