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DMA Operations Guide Upgrading the Software
372 Polycom, Inc.
See also:
“Upgrading the Software” on page 366
“Basic Upgrade Procedures” on page 367
“Simplified Supercluster Upgrade (Complete Service Outage)” on
page 374
“Complex Supercluster Upgrade (Some Service Maintained)” on page 377
Factors to Consider for an Incremental Supercluster Upgrade
Before deciding to attempt an incremental supercluster software upgrade, be
aware of the following:
• An incremental upgrade can easily take five times as long as the simplified
method.
• As clusters are removed from the existing supercluster and upgraded, its
capacity is reduced. As the new supercluster is being built, it won’t be at
full capacity until all clusters are upgraded. Both the existing supercluster
and the new one will have limited capacity for a significant period of time,
with the following possible consequences:
— Some endpoints may be unable to register.
— The MCUs remaining in the supercluster may not have the capacity to
handle all the conferences.
— Some endpoints may not successfully redirect their registrations and
may not be able to make/receive calls.
• As the old supercluster is deconstructed, the territory associations have to
be changed each time a cluster leaves. As the new supercluster is built, the
territory associations have to be changed each time a cluster joins.
Caution
We strongly recommend upgrading a supercluster only during a system-wide
maintenance window when there are no calls or conferences on the system and all
clusters can be taken out of service. This makes the process significantly faster and
easier.
If you must upgrade incrementally, be aware of the limited capacity available at any
given point in the process. It’s advisable to ensure that there is little or no
conferencing activity in any given territory until after the new supercluster has been
created and territory responsibilities for that territory have been reassigned to a
cluster in the new supercluster.
To minimize the time required for an upgrade:
• If the upgrade requires a new license, obtain the license keys ahead of time.
• Download a recent backup and upload the upgrade package file to all clusters
in the supercluster ahead of time.