Cisco MDS 9000 Family Storage Media Encryption Configuration Guide - Release 4.x (OL-18091-01, February 2009)

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Cisco MDS 9000 Family Storage Media Encryption Configuration Guide
OL-18091-01, Cisco MDS NX-OS Release 4.x
Chapter 4 Cisco SME Cluster Management
In-Service Software Upgrade (ISSU) in a Two-Node Cluster
• The upgrading node sends a message to the other node of the intent to leave the cluster. The
upgrading node can either be a master node or a slave node.
• The remaining node remains in the cluster and performs the role of the master node if it was a slave
node. This node continues to remain in the cluster with the quorum intact.
• After the ISSU is completed and the switches boot up, the upgraded node rejoins the cluster as a
slave node.
Note This feature is tied to the internals of ISSU logic and no additional commands need to be executed.