Click on the calculator icon in the upper left-hand corner. Your customer wants to use a VNX
system at an unmanned DR site. The system will be used exclusively as a secondary
MirrorView/A system, and it is capable of performing 60,000 LUN IOPs in this role. The primary
system is also a VNX.
If the total primary image workload consists of 1 KiB random I/Os with a R/W ratio of 3:1, what is
the maximum bandwidth required for the link between the VNX systems?
A.
240 Mb/s
B.
120 Mb/s
C.
360 Mb/s
D.
600 Mb/s
60,000 x 1 x 1/4 x 8 / 1000=120 Mb/s
Should be B.
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YES ANSWER IS B!!!!!!!!!
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MirrorView changes are tracked at a 2KiB chunk size.
60000 x 2 x 1/4 = 30000 KiB/s
30000 * 8 / 1000 = 240Mb/s
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