What is the primary purpose of a Protection Domain in PowerFlex?

Question

Options

• AGrouping nodes based on geographical location
• BIsolating storage resources for fault containment
• CManaging metadata for storage pools
• DConfiguring node maintenance schedules

• A
  3% (2)
• B
  92% (58)
• C
  3% (2)
• D
  2% (1)

Explanation

A Protection Domain in PowerFlex (formerly ScaleIO) serves as a logical boundary that groups Storage Data Servers (SDSs) together to isolate fault impact - if a component fails, the blast radius is contained within that domain rather than affecting the entire cluster. This makes B correct: the core design goal is fault containment and resilience scoping, not just resource grouping.

Why the distractors are wrong:

• A - Protection Domains are not geographically motivated; they're about fault isolation topology. Rack awareness is a separate concept handled at the fault set level.
• C - Metadata management is handled by Metadata Managers (MDMs), a distinct architectural component.
• D - Node maintenance scheduling is an operational/orchestration concern, not a function of Protection Domains at all.

Memory tip: Think of a Protection Domain as a firewall for failures - it protects the rest of the cluster by containing the damage to one defined group of nodes.

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