A storage administrator has configured an SMB share with the Pool Automatic Deletion retention policy. With default settings applied, what will happen when the pool crosses 95%? A The default…

Question

Options

• AThe Dell Unity system will delete snapshots until 85% pool space is reached.
• BWhen the snapshot reaches 25% of the pool size, snapshots will be deleted until 20% of the pool
• CThe Dell Unity system will only delete the oldest snapshot of the configured schedule.

• A
  18% (9)
• B
  73% (36)
• C
  8% (4)

Explanation

With the Pool Automatic Deletion retention policy on Dell Unity, the system monitors snapshot consumption relative to pool capacity. When the pool crosses 95% full, the threshold that triggers action is actually tied to snapshot space: once snapshots consume 25% of the pool, Unity begins auto-deleting the oldest snapshots and continues until snapshot usage drops to 20% of pool space - making B correct.

Why A is wrong: Dell Unity does not use an 85% target watermark for this policy; the 85% figure doesn't correspond to any default threshold in this retention mode.

Why C is wrong: The policy doesn't stop after deleting just the single oldest snapshot - it keeps deleting snapshots iteratively until the 20% snapshot-space floor is reached, which could mean many snapshots are removed.

Memory tip: Think "25 → 20" - Unity sees snapshots eating 25% of the pool and trims them down to 20%. The 95% pool fill is the trigger, but the action is governed by snapshot percentage thresholds, not overall pool percentages.

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