LAB: Deploying Exchange 2010 DAG - Part 1 – Configure Witness

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Configure Witness Server and Directory

If the witness server you specify isn't an Exchange 2010 server, You must add the Exchange Trusted Subsystem universal security group to the local Administrators group on the witness server

1. On Witness Server
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2.
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The following combinations of options and behaviors are available:
  • You can specify only a name for the DAG and leave the Witness Server and Witness Directory check boxes cleared. In this scenario, the wizard will search for a Hub Transport server that doesn't have the Mailbox server role installed. It will automatically create the default directory and share on that Hub Transport server and use that server as the witness server.
  • You can specify a name for the DAG, the witness server that you want to use, and the directory you want created and shared on the witness server.
  • You can specify a name for the DAG and the witness server that you want to use, and leave the Witness Directory check box cleared. In this scenario, the wizard will create the default directory on the specified witness server.
  • You can specify a name for the DAG, leave the Witness Server check box cleared, and specify the directory you want created and shared on the witness server. In this scenario, the wizard will search for a Hub Transport server that doesn't have the Mailbox server role installed, and it will automatically create the specified directory on that server, share the directory, and use that Hub Transport server as the witness server.

Blog Extended Reading

1. LAB: Deploying Exchange 2010 DAG - Part 1 – Configure Witness
2. LAB: Deploying Exchange 2010 DAG - Part 2 – Create NEW DAG
3. LAB: Deploying Exchange 2010 DAG - Part 3 – Manage DAG
4. LAB: Deploying Exchange 2010 DAG - Part 4 – Manage DAG Network
5. LAB: Deploying Exchange 2010 DAG - Part 5 - Create Database Copies



More Information & Reference
1. Deploying High Availability and Site Resilience



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