You can use the Command Center to install Commvault feature release and maintenance releases on the CommServe server on demand.
Note
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The system will install the software that has already been downloaded or copied to the CommServe server cache. For more information, see the following:
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If the CommServe server or the Web Server need to be rebooted during a platform release/maintenance release update, the system will automatically reboot. Upon server restart, the Commvault installer will automatically resume and complete the platform release/maintenance release update.
 
Procedure
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From the navigation pane, go to Manage > System > Maintenance.
The Maintenance page appears.
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Click Install update schedules.
The Install update schedules section appears, showing the current installation schedules.
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To install software for a specific schedule, click Run job
 for the desired schedule. - 
To install software for a new set of servers or server groups, click Run job
 at the top of the Install update schedules section.The Install updates dialog box appears.
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Select the servers that you want to install the software on, and then click Run.