Preparing for a System-Altering Procedure
Events that are system-altering and require advance preparation by the administrator are:
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Adding or removing a high availability (HA) system. See Adding a High Availability System.
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Updating the system to a later version (by using an ISO update file).
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Upgrading the system by deploying a parallel system and transferring the original system data to the upgraded system (by using an OVA file). See Upgrading Your System.
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Expanding the system to a larger size. See Expanding Your System.
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Because these procedures require exclusive access to the system, users cannot access the system for meetings. Be sure to schedule this procedure during a time that will be least disruptive to your users. Be sure to coordinate with other system administrators before starting a system-altering procedure. Other system administrators should not access the system during this procedure. If they do so, their changes are not saved, and the result can be unpredictable. |
Backups are not required for these actions. If you do not need to create backups of your virtual machines, then you do not need to complete this procedure. However, as a best practice, we recommend creating a backup. For complete details on this backup, see Creating a Backup by Using VMware vCenter, the VMware Data Recovery Administration Guide, or the vSphere Data Protection Administration Guide.