Describe and Configure Data Reduction UNITY-DEPLOY Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A Unity administrator has enabled Data Reduction on a pool hosting virtual desktop infrastructure (VDI) LUNs. After one week, the administrator reviews the efficiency report in Unisphere and sees a Data Reduction ratio of 1.5:1. The administrator expected higher savings based on the vendor's marketing materials. What is the most likely reason for the lower-than-expected ratio?

   • AThe VDI LUNs are thin-provisioned, which prevents Data Reduction from working.
   • BThe Data Reduction ratio is calculated only on the pool's free space, not the used space.
   • CThe administrator enabled Data Reduction on the LUNs but not on the pool, so only partial savings are being applied.
   • DThe VDI workload has not yet accumulated enough duplicate data because the pool was only recently enabled.
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   What is a primary performance consideration when enabling Data Reduction on a Dell Unity system?

   • ADecreased network bandwidth due to reduced data size
   • BDecreased disk speed due to slower spinning drives
   • CIncreased CPU usage due to inline processing
   • DIncreased memory usage due to storing all data in RAM
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4. 8foundation · easy

   In which scenario is Data Reduction most likely to be beneficial?

   • AA workload that requires minimal CPU usage on the storage array
   • BA database with highly compressible and repetitive data
   • CA workload that writes large amounts of already-compressed media files
   • DA workload with extremely high random write performance requirements
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5. 9application · medium

   A Unity administrator is considering enabling Data Reduction on a pool that hosts a log collection system. The logs are text files that are written sequentially and are highly repetitive. What is the likely performance and capacity impact?

   • AHigh capacity savings but significant performance impact, because the logs are written too frequently.
   • BLow capacity savings with significant performance impact, because the logs are random writes.
   • CHigh capacity savings with minimal performance impact, because the text logs are highly compressible and sequential writes are efficient.
   • DLow capacity savings with minimal performance impact, because the logs are already compressed.
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A Unity administrator is evaluating whether to enable Data Reduction on a pool that hosts a backup repository. The backup software writes large sequential blocks of compressed data. What is the likely outcome of enabling Data Reduction on this pool?

   • ANo savings, because Data Reduction is not supported on backup LUNs.
   • BMinimal savings, because the backup data is already compressed and sequential writes reduce deduplication opportunities.
   • CHigh savings, because backup data is highly repetitive and compresses well.
   • DHigh savings, because sequential writes are ideal for deduplication.
   Reveal Solution Discussion Select an answer first