HP BladeSystem c-Class Virtual Connect Support Utility Version 1.9.1 User Guide

Downgrades 18
Downgrades
Overview
This feature enables you to downgrade to a previously installed and running version of VC.
The following requirements are for downgrading firmware on a VC domain without destroying the domain.
Otherwise, to downgrade firmware on VC modules, you must first delete the domain and then use the -a
update command.
Restrictions
The following restrictions apply:
• You must be running VC version 3.70 or higher to perform a downgrade.
• You cannot downgrade to a VC version lower than version 3.17.
• A previous upgrade must have been performed on the configuration using VCSU 1.7.0 or higher.
• All servers in the domain must be powered off.
• Multiple, consecutive firmware downgrades are not allowed.
• You can downgrade only to the version previously installed and running on the primary module.
• The VC configuration, including physical connections, uplink port connections, and module positions in
the enclosure, must be identical to the target downgrade configuration.
• The VC credentials must be the same before and after the downgrade. After the downgrade, you cannot
change the password for the account used to perform the downgrade.
• The primary E-net module must be in the lowest bay number.