It is not required to
install the RTM software and then upgrade to SP1.
??‘ Uninstall: Used to remove Exchange or a specific role.
??‘ RecoverServer: Used to perform a disaster recovery of a server. For example, if a server crashes
and is rebuilt with the same server name, this option would be invoked to rebuild the server.
The server ??™ s information is read from Active Directory and Exchange would be reinstalled, and
then any other role clean can occur.
To install the UM role on a new server, the command would look like this:
Setup /r:UM
Because this is an installation, setup defaults to installation mode, therefore /mode:Install is unnecessary.
/roles or /r
The /roles switch instructs the installer which Exchange roles to install or uninstall on the server. Multiple
roles can be installed by using a comma - separated list. The following list provides the roles and their syntax:
??‘ Client Access ( CA or C )
??‘ Edge Transport ( ET or E )
??‘ Hub ( HT or H )
??‘ Mailbox ( MB or M )
??‘ Unified Messaging ( UM or U )
To install the Mailbox role on a server the command looks as follows: Setup.com /role:M . To remove
CAS from a server the command would look like this: Setup.com /r:c /m:uninstall .
Windows PowerShell can be used to greatly simplify the installation of Exchange roles.
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