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E20-885 · Question #234

A heterogeneous Pool is created as follows: - 5 x 200 GB FAST VP optimized Flash drives, configured as 4+1 R5 - 10 x 600 GB 10K rpm SAS drives, configured as 4+1 R5 - 16 x 2 TB NL-SAS drives…

The correct answer is A. 480 IOPS. See the full explanation below for the reasoning.

Question

A heterogeneous Pool is created as follows:

  • 5 x 200 GB FAST VP optimized Flash drives, configured as 4+1 R5
  • 10 x 600 GB 10K rpm SAS drives, configured as 4+1 R5
  • 16 x 2 TB NL-SAS drives, configured as 6+2 R6

Ten equal-sized thick LUNs are created on the pool at 5 minute intervals. No space is left in the pool. All parameters are left at the default value. Testing is started at 9:00 A.M. on the 10 LUNs using IOmeter. The R/W ratio for the testing is set at 3:1, and 4 kB random I/Os are performed. What throughput do you expect to see from the LUN that was created second?

Options

  • A480 IOPS
  • B960 IOPS
  • C4,100 IOPS
  • D5,600 IOPS

How the community answered

(64 responses)
  • A
    81% (52)
  • B
    3% (2)
  • C
    5% (3)
  • D
    11% (7)

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