Describe Dynamic Pool Expansion, Considerations for Mixing Drive Sizes and the Rebuild Process UNITY-DEPLOY Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is a typical impact on pool performance during a rebuild process in a Dell Unity dynamic pool?

   • APerformance improves because the rebuild increases the number of drives in the pool.
   • BPerformance is only affected for reads, not writes, during the rebuild.
   • CPerformance is unaffected because the rebuild uses dedicated spare drives.
   • DPerformance may be degraded because the rebuild consumes I/O resources and bandwidth.
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2. 7application · medium

   A Unity XT dynamic pool has 12 drives and one drive fails. The pool has distributed spare capacity. What happens to the data on the failed drive?

   • AThe data is lost because there is no dedicated hot spare.
   • BThe data is copied from a backup to the distributed spare capacity.
   • CThe data is reconstructed from the remaining drives and written to the distributed spare capacity.
   • DThe data is moved to the remaining drives without using spare capacity.
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4. 8expert · hard

   A Unity XT dynamic pool has 6 x 1.92 TB SAS SSDs. The administrator wants to add 6 x 3.84 TB SAS SSDs. The pool is currently 70% full. What is the best way to maximize the usable capacity of the new drives?

   • AAdd the 3.84 TB drives to the existing pool, accepting the capacity waste.
   • BCreate a new dynamic pool with the 3.84 TB drives and migrate data from the existing pool.
   • CReplace the 1.92 TB drives with the 3.84 TB drives and add the 1.92 TB drives to a new pool.
   • DAdd the 3.84 TB drives to the existing pool and manually adjust the pool to use the full capacity.
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5. 9foundation · easy

   An administrator needs to expand a Dell Unity dynamic pool to increase its total capacity. What is the correct way to perform this expansion?

   • ACreate a new pool and migrate all data from the original pool to the new pool.
   • BAdd one or more drives of the same type to the pool; the system automatically rebalances data across all drives.
   • CReplace existing drives with larger drives one at a time, waiting for each rebuild to complete.
   • DIncrease the pool's RAID protection level to gain additional usable capacity.
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6. 10application · medium

   A Unity XT dynamic pool currently has 8 x 2 TB NL-SAS drives. The administrator wants to add 4 x 4 TB NL-SAS drives to increase capacity. What is the total usable capacity of the pool after the expansion?

   • A28 TB, because the pool averages the drive sizes.
   • B24 TB, because the pool is limited by the smallest drive size (2 TB).
   • CThe expansion will fail because the drive sizes are too different.
   • D32 TB, because the pool uses the full capacity of all drives.
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