D-PWF-OE-00 · Question #3
PowerFlex upgrades require all nodes to be in Maintenance Mode.
The correct answer is B. False. B is correct because PowerFlex supports rolling (non-disruptive) upgrades, meaning nodes are upgraded sequentially - one at a time - while the remaining nodes continue serving I/O. Placing all nodes in Maintenance Mode simultaneously would halt data services entirely, which…
Question
PowerFlex upgrades require all nodes to be in Maintenance Mode.
Options
- ATrue
- BFalse
How the community answered
(62 responses)- A6% (4)
- B94% (58)
Explanation
B is correct because PowerFlex supports rolling (non-disruptive) upgrades, meaning nodes are upgraded sequentially - one at a time - while the remaining nodes continue serving I/O. Placing all nodes in Maintenance Mode simultaneously would halt data services entirely, which defeats the purpose of a distributed, highly available storage platform.
Why A is wrong: Requiring all nodes to enter Maintenance Mode at once would create a complete cluster outage. PowerFlex's architecture is specifically designed to avoid this; it rebuilds and rebalances data across active nodes while each node cycles through its upgrade individually.
Memory tip: Think of PowerFlex upgrades like changing tires on a moving conveyor belt - you handle one at a time while the rest keep rolling. "All nodes = all down" is the anti-pattern PowerFlex was built to eliminate.
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