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Dell-EMC

E20-880 · Question #129

A customer creates a multi-tiered pool with the following configuration: - Five 200 GB FAST VP optimized Flash drives configured as 4+1 RAID 5 - Ten 600 GB 15 krpm SAS drives configured as 4+1 RAID…

The correct answer is A. 3,397 writes/s and 6,793 reads/s. See the full explanation below for the reasoning.

Question

A customer creates a multi-tiered pool with the following configuration:

  • Five 200 GB FAST VP optimized Flash drives configured as 4+1 RAID 5
  • Ten 600 GB 15 krpm SAS drives configured as 4+1 RAID 5
  • Sixteen 2 TB NL-SAS drives configured as 6+2 RAID 6

The customer's workload consists of 4 kB random I/Os with a R/W ratio of 2:1. How many host IOPs can the pool support?

Options

  • A3,397 writes/s and 6,793 reads/s
  • B28,240 IOPs
  • C20,740 IOPs
  • D6,913 writes/s and 13,827 reads/s

How the community answered

(29 responses)
  • A
    72% (21)
  • B
    7% (2)
  • C
    3% (1)
  • D
    17% (5)

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