Describe and Manage FAST Cache UNITY-OPERATE Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A Unity array supports a virtual desktop infrastructure (VDI) environment. Users report that logon storms cause noticeable delays. The storage administrator observes that during these storms, read operations dominate and the array's DRAM cache is frequently overwritten. The administrator wants to reduce the impact of these read-heavy bursts. What is the primary benefit of enabling FAST Cache in this scenario?

   • AIt reduces write latency by buffering writes in flash before destaging to disk.
   • BIt automatically moves frequently accessed data to a higher-performance tier.
   • CIt increases the DRAM cache size by using flash as an additional memory layer.
   • DIt provides a larger flash-based cache to absorb read bursts and reduce disk I/O.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   An administrator is explaining FAST Cache to a colleague. The colleague asks, 'How does FAST Cache improve performance compared to adding more DRAM?' What is the most accurate answer?

   • AFAST Cache is faster than DRAM, so it improves performance more.
   • BFAST Cache replaces DRAM, so it is more efficient.
   • CFAST Cache provides a larger cache capacity at a lower cost than DRAM, using flash drives.
   • DFAST Cache is easier to configure than DRAM.
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A hospital's Unity array hosts an electronic medical records (EMR) database. The storage team notices that the database's read cache hit rate is low, causing frequent disk reads that increase latency during peak clinic hours. The array has several unused SSD drives that are not part of any pool. The team wants to improve read performance without adding new LUNs or changing the database layout. What should the administrator do?

   • ACreate a new pool with the SSDs and migrate the database LUN to that pool.
   • BEnable FAST VP to automatically move hot data to the SSDs.
   • CEnable FAST Cache using the unused SSDs as cache devices.
   • DIncrease the system's DRAM cache by adding more memory modules.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which benefit does FAST Cache provide for a Dell Unity system?

   • AIncreases the total usable storage capacity of the system
   • BReduces the need for additional RAM in the storage processors
   • CEliminates the need for data tiering in the storage system
   • DImproves performance for workloads with high read/write activity
   Reveal Solution Discussion Select an answer first
6. 15foundation · easy

   How does FAST Cache affect write operations in a Dell Unity system?

   • AWrite performance can improve because writes are cached on flash before being written to disk
   • BWrite performance improves only for sequential writes
   • CWrite performance is unchanged because cache only affects reads
   • DWrite performance degrades because flash drives wear out quickly
   Reveal Solution Discussion Select an answer first