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PowerFlex upgrades require all nodes to be in Maintenance Mode. True. False.
Correct Answer: A,B
PowerFlex is designed for Non-Disruptive Upgrades (NDU). Requiring all nodes to be in maintenance mode simultaneously would cause a complete cluster outage (Data Unavailable), which defeats the purpose of the architecture. The upgrade process is rolling. * Node 1 enters Maintenance Mode (data is safe on other nodes). * Node 1 is upgraded and rebooted. * Node 1 rejoins the cluster and syncs data. * The system moves to Node 2. At no point is the entire cluster in maintenance mode. The cluster remains online and serves I/O throughout the entire process.