In a Single-data Center (SDC) system, the data center must be put into
Maintenance Mode. In a Multi-data Center system, all data centers can be
brought down for updating, or in some cases the data centers can be brought
down one-at-a-time. This condition is referred to as a Zero-downtime Update,
where service is maintained by one data center while another is being updated.
(Check the release notes for which Cisco WebEx Meeting Server version is
eligible for a Zero-downtime Update.)
Also if you are performing a Zero-downtime Update, we recommend that you
update all other data centers in the system as soon as possible after updating
the first data center.
defined as a replacement of the system to deploy major modifications that we
made to the system. For example replacing a system currently running version
1.5 to run version 2.0 that includes support for a new operating system. An
defined as overwriting an existing (original) system to take advantage of
modifications that we made to improve the system. An
defined as enlarging an existing system, but not changing the application
version. For example, you might update a system from version 1.5 to 1.5MR,
upgrade a system from 1.5 to 2.0, or expand a system from 800 users to 2000
users. In all cases, the processes include transferring all of the data from
the original system to the updated, upgraded, or expanded system.
following table to determine if you should perform a system upgrade or update
on a data center to run a specific release of Cisco WebEx Meetings Server.
The complete update procedure, including backing up your virtual
machines, might take up to an hour depending on:
package for your system includes an ISO image. You cannot
versions of the software. For example, you must install the Cisco WebEx
Meetings Server version 1.1 (Build 18.104.22.168.A) or version 1.5 (Build 22.214.171.124.A)
before applying 1.5 MR2. Check the release notes for the correct version to
The data center
will be in Maintenance Mode during the update. If this is not a Zero-downtime
Update, notify users that they cannot access the system for meetings.
system administrators that they should not access the data center being updated
during this procedure. If they do so, their changes are not saved and the
result can be unpredictable.
Turning on Maintenance Mode on all active data centers shuts
down conferencing activity and prevents users from signing in to the WebEx
site, scheduling meetings, joining meetings, or playing meeting recordings. See
About Maintenance Mode for information about which system
tasks require Maintenance Mode to be turned on.
In the VMware
vSphere client, select
Power > Shut Down
Guest on each of the virtual machines in the data
center to be updated.
details on using vSphere, see the VMware ESXi and vCenter Server documentation.
Once the virtual
machines are powered off, use VMware Data Recovery (or VMware vSphere Data
Protection available with vSphere Release 5.1) to create a backup of each of
the virtual machines in the data center.
A backup returns
your virtual machine to its state before the update if necessary. For further
Creating a Backup by using VMware vCenter. For complete details on this backup,
Recovery Administration Guide or the
Protection Administration Guide.
You can also
take a snapshot, but you should delete all snapshots in approximately 24 hours,
or you might experience data performance issues. For more information, see
Taking a Snapshot by using VMware vCenter.
of all your virtual machines, because the update procedure makes changes to
your existing virtual machines, and once the update procedure begins you will
not be able to cancel the update.
In the VMware
vSphere client, power on each of the virtual machines in your data center.
Log in to the
Cisco WebEx Administration site, but do not turn off Maintenance Mode.
For the fastest
update, we recommend that you mount the ISO image in the vCenter datatstore.
However, if you place it in a local disk accessible to the vSphere client, be
sure the vSphere client has a hard-wired connection into your company Intranet
(not over VPN).
To place the ISO
image in the vCenter datastore and connect to the CD/DVD, complete the