What is a consideration when expanding a dynamic pool?

Question

Options

• AThe maximum number of slices in a private LUN is 256.
• BThe maximum number of drives is 64 in a drive partnership group.
• CThe maximum number of drives is 16 in a RAlD Group.
• DThe minimum number of drives in a RAID 5 (4+1) RAID Group is 5.

• A
  3% (2)
• B
  9% (6)
• C
  2% (1)
• D
  86% (57)

Explanation

When expanding a dynamic pool, you must respect RAID Group constraints - and a RAID 5 (4+1) configuration requires exactly 5 drives (4 data + 1 parity), which is also the minimum to form that group. Violating this minimum means the RAID Group cannot be created or expanded, making drive count a critical gating factor.

Why the distractors are wrong:

• A is incorrect because the 256-slice limit applies to private LUNs, not directly to dynamic pool expansion decisions.
• B is incorrect - drive partnership groups (used in some storage architectures) have a limit of 16 drives, not 64.
• C is incorrect because RAID Groups can support more than 16 drives depending on configuration; 16 is not a universal RAID Group drive maximum.

Memory tip: Think "4+1 = 5, no less, no more to start" - the RAID 5 (4+1) label literally tells you the minimum: 4 data drives plus 1 parity drive equals 5 minimum. If you can't meet the minimum, you can't expand.

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