Exam D-PWF-OE-00 Topic 4 Question 101 Discussion
Actual exam question for EMC's D-PWF-OE-00 exam
Question #: 101
Topic #: 4
Question #: 101
Topic #: 4
Before starting a PowerFlex upgrade, which step is essential to ensure the process completes successfully?
Suggested Answer: B Vote an answer
Verifying cluster health is the absolute prerequisite before attempting any upgrade or maintenance activity.
An upgrade involves taking nodes offline (rebooting) sequentially. When a node goes offline, the cluster relies on the remaining nodes to serve I/O and maintain data redundancy.
If the cluster is already in a Degraded state (e.g., a drive is failed, or capacity is nearly full), taking a node offline could result in Data Unavailable (DU) or Data Loss (DL).
PowerFlex Manager and the CLI provide "Pre-upgrade Health Checks." These checks validate:
No active rebuilds or rebalances are running.
All SDS and MDM components are connected and synchronized.
There is sufficient spare capacity to handle a node failure or maintenance mode.
An upgrade involves taking nodes offline (rebooting) sequentially. When a node goes offline, the cluster relies on the remaining nodes to serve I/O and maintain data redundancy.
If the cluster is already in a Degraded state (e.g., a drive is failed, or capacity is nearly full), taking a node offline could result in Data Unavailable (DU) or Data Loss (DL).
PowerFlex Manager and the CLI provide "Pre-upgrade Health Checks." These checks validate:
No active rebuilds or rebalances are running.
All SDS and MDM components are connected and synchronized.
There is sufficient spare capacity to handle a node failure or maintenance mode.
by Hedy at Jul 08, 2026, 11:38 PM
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