You are performing an automated upgrade of a 2-node cluster. Node-01 upgrades successfully. But during the node-02 upgrade, there is a power outage at the site. When power is restored and the nodes are booted, you receive this message: Warning: The Cluster is in a mixed version state. Update all of the nodes to the same version as soon as possible.
In this scenario, which command provides information that will help you understand the problem?
The most appropriate command to understand the problem in this scenario is 'system node upgrade-revert show'. This command provides information about the status of upgrades or reversions, enabling you to determine which phase of the upgrade contains the failed task and the reason for the failure, especially pertinent when an upgrade is interrupted as indicated in the mixed version state.
C The system node upgrade-revert show command displays information about the status of upgrades or reversions. If an upgrade has failed, this command enables you to determine which phase of the upgrade contains the failed upgrade task and the reason for the failure.
The correct answer should be C Refer: http://docs.netapp.com/ontap-9/index.jsp?topic=%2Fcom.netapp.doc.dot-cm-cmpr-970%2FTOC__system__node__upgrade-revert.html