What is the minimum number of nodes required for creating a Fault Set in PowerFlex?

Question

Options

• A2
• B3
• C4
• D6

• A
  6% (2)
• B
  88% (29)
• C
  3% (1)
• D
  3% (1)

Explanation

Option B (3) is correct because PowerFlex requires a minimum of three nodes to form a valid Fault Set configuration. This threshold ensures that when one Fault Set (or node group sharing a failure domain) goes offline, the remaining nodes can still maintain data availability and support the rebuild process - you need at least one surviving copy of data plus enough capacity to reconstruct.

Why the distractors are wrong:

• A (2) is insufficient because losing one node in a two-node scenario would leave no redundancy - the system cannot guarantee data survival or a successful rebuild.
• C (4) and D (6) are valid operational numbers but are not the minimum - they represent larger, more resilient configurations, not the floor requirement.

Memory tip: Think "fault tolerance triangle" - just like a triangle is the minimum shape with structural stability (three sides), three nodes is the minimum for PowerFlex Fault Sets to maintain a stable, failure-tolerant data protection structure. If you can picture a triangle, you'll remember the number 3.

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