When testing an
upgraded system, you can keep the original system until you have finished
testing the upgraded system (but because they share some parameters, such as IP
addresses, you cannot power on both systems at the same time). Once you are
satisfied with the results of the upgraded system tests, you can remove
(forever) the original system. Be sure your upgraded system is running when
removing the original system. This prevents accidental removal of the base
virtual machine disk (VMDK) file that must be accessed by the upgraded system.
Some of the
recommended tests to run on the system are.
Turning on Maintenance Mode on all active data centers shuts down conferencing activity. Users cannot sign in to the WebEx site, schedule meetings, join meetings, or play meeting recordings. If this data center is part of a Multidata Center (MDC) system, in-progress meetings fail over to an active data center. The failover might cause a brief interruption in active meetings. See About Maintenance Mode for information.
The results of the test are posted for the following:
CPU, memory, network, and storage for each host on your system
Internal and external connectivity checks for your site and administration URLs
Turn off Maintenance Mode.
When you turn off Maintenance Mode, the system determines whether a restart or a reboot is required, and displays the appropriate message. A restart takes approximated 3 to 5 minutes and a reboot takes approximately 30 minutes. If this data center is part of a Multidata Center (MDC) system, the administrator is redirected to the global admin URL. The DNS resolution policy determines which data center the administrator sees. If Key Regeneration is enabled, taking one data center out of Maintenance Mode automatically takes all data centers in the system out of Maintenance Mode.