There are 240 snapshots that are created for a Base LUN on a Dell Unity XT array. What is the maximum number of thin clones that can be created from the Base LUN?

Question

Options

• A8
• B16
• C32
• D64

• B
  95% (36)
• C
  3% (1)
• D
  3% (1)

Explanation

Option B (16) is correct because Dell Unity XT supports a maximum of 256 snapshots per Base LUN, and thin clones consume snapshot slots from that same pool. With 240 snapshots already created, only 16 slots remain (256 − 240 = 16), which caps the number of thin clones that can be created.

• A (8) is wrong - it would only be correct if 248 snapshots already existed, leaving 8 slots.
• C (32) is wrong - this would require only 224 existing snapshots (256 − 224 = 32).
• D (64) is wrong - this would require only 192 existing snapshots; at 240 snapshots already used, the math simply doesn't support 64 more.

Memory tip: Think of it as a single shared bucket of 256 total slots for both snapshots and thin clones. Just subtract the existing snapshots from 256 - whatever is left is your thin clone ceiling. On exams, always do the quick subtraction: 256 − (existing snapshots) = max thin clones.

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