D-PWF-OE-00 · Question #19
A Fault Set in PowerFlex requires a minimum of 3 nodes to ensure fault tolerance.
The correct answer is A. True. Option A is correct because PowerFlex Fault Sets are logical groupings of Storage Data Servers (SDSs) that share a common failure domain (e.g., a rack or chassis). A minimum of 3 nodes is required so the system can maintain quorum and continue read/write operations - with only…
Question
A Fault Set in PowerFlex requires a minimum of 3 nodes to ensure fault tolerance.
Options
- ATrue
- BFalse
How the community answered
(16 responses)- A88% (14)
- B13% (2)
Explanation
Option A is correct because PowerFlex Fault Sets are logical groupings of Storage Data Servers (SDSs) that share a common failure domain (e.g., a rack or chassis). A minimum of 3 nodes is required so the system can maintain quorum and continue read/write operations - with only 2 nodes, a single fault set failure would leave the system unable to guarantee data availability or complete rebuilds safely.
Option B is wrong because claiming no minimum node requirement ignores how PowerFlex enforces protection domain integrity; fewer than 3 nodes removes the redundancy buffer needed for the system to survive a fault set-level failure while still serving I/O.
Memory tip: Think of the "3-legged stool" rule - just as a stool needs 3 legs to stand even if one wobbles, a PowerFlex Fault Set needs at least 3 nodes to remain operational when one goes down.
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