Dell-EMC
E20-880 · Question #176
E20-880 Question #176: Real Exam Question with Answer & Explanation
The correct answer is A. New writes are redirected to slices outside of the thick LUN area.. See the full explanation below for the reasoning.
Question
Refer to the exhibit. A customer starts a test running on a thick LUN. The test generates random 4 kB I/Os with a R/W ratio of 2:1. A VNX Snapshot is started on the thick LUN at 09:37. The customer notes a decrease in LUN performance and asks for an explanation. Which explanation is correct?
Exhibit
Options
- ANew writes are redirected to slices outside of the thick LUN area.
- BThe read/write ratio changes once a VNX Snapshot is started on a LUN.
- CWrite coalescing causes the physical disks to perform longer seeks.
- DPrefetching causes the physical disks to perform fewer seeks.
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