Important Information#

Unified-Node-Cluster Modular-Node-Cluster Single-Unified-Node

This section provides important information for the upgrade. Please review all of the following before starting this upgrade.

Time to install/migrate

When upgrading, database index migration on large scale systems may take a significant amount of time. This occurs during the database index migration phase, when running voss upgrade_db.

Migration times can be substantial; on a system with 10 million RESOURCE documents:

  • When upgrading from 24.2-PB1 or later: 3-4 hours

  • When upgrading from 24.2-PB0 or earlier: 4-5 hours

This migration initiates at console output Migrating database indexes, and completes at console output Migrating database indexes: SUCCESS:

Migrating database indexes
Migrating database indexes: SUCCESS

Snapshots

It is recommended that you take snapshots of all nodes that are part of the cluster before applying the patch. These snapshots can be used in case you need to roll back. See Rollback in this document.

Adaptations

It is recommended that you verify the compatibility of any installed adaptations with this patch bundle, in a lab, before installing in production.

Some adaptations might need to be re-installed post patch bundle installation.

screen Command

It is recommended that commands in installation steps are run in a terminal opened with the screen command.

Post-upgrade patch installs

Ensure that you perform any mandatory post-upgrade patch installs (if required) for all deployment types.

Provisioning Cisco VG410 Gateway?

If you’re going to be provisioning Cisco VG410 Gateway, you will need to re-import the device/cucm/GateType model to support this new VG410 Gateway after upgrading to this release.