Describe and Configure Data Reduction UNITY-DEPLOY Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Where is Data Reduction enabled on a Dell Unity system?

   • AOn the individual disk drive
   • BOn the host server's operating system
   • COn the storage pool
   • DOn the network switch
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2. 17expert · hard

   A financial services firm runs a high-frequency trading application on a Unity array. The application writes small, random blocks (4 KB) to a LUN and requires consistently low latency. The storage team is considering enabling Data Reduction to save space, but they are concerned about performance. The application data is already compressed by the application before writing. What is the best course of action?

   • AEnable Data Reduction and set the pool to use a lower compression level to reduce CPU overhead.
   • BEnable Data Reduction on the pool, because the small block size will yield high deduplication savings without noticeable latency.
   • CLeave Data Reduction disabled, because the workload is latency-sensitive and the data is already compressed, so savings would be minimal.
   • DEnable Data Reduction only on the LUN, not the pool, to isolate the performance impact.
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4. 18foundation · easy

   What is the role of inline compression in Dell Unity Data Reduction?

   • AIt eliminates duplicate blocks by comparing their content
   • BIt moves less frequently accessed data to slower, cheaper storage tiers
   • CIt creates a compressed copy of the entire LUN for backup purposes
   • DIt reduces the size of data blocks by encoding them more efficiently
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5. 19application · medium

   A Unity array hosts a database that stores customer records. The database has a large amount of repeated data across multiple tables. The storage administrator wants to reduce capacity usage. Which statement correctly describes how Unity Data Reduction will handle this workload?

   • AData Reduction will only use compression, because deduplication is not supported on database LUNs.
   • BData Reduction will only use deduplication, because compression is not supported on block LUNs.
   • CData Reduction will use both inline compression and deduplication to remove redundant blocks and compress the remaining data.
   • DData Reduction will run as a background process that periodically scans and compresses data.
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6. 20foundation · easy

   What happens to Data Reduction settings when a LUN is created in a pool that has Data Reduction enabled?

   • AThe LUN must have Data Reduction manually enabled after creation
   • BThe LUN cannot have Data Reduction enabled if the pool has it enabled
   • CThe LUN's Data Reduction setting is determined by the host operating system
   • DThe LUN inherits the pool's Data Reduction setting by default
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