first formula take host iops , read/write ratio and tells you how much backend iops will be generated. Your second formula looks odd, that website takes a number of drives and based on read/write ratio tells you how many host iops it will be able to service.
Take a look at this discussion, RRR and Jon explain performance calculations in great details
As Dynamox pointed out our “Ask the Expert” discussion is a good source of how to do these calculations. If you have questions after reading the discussion, ask! Feel free to join the discussion.
dynamox
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October 2nd, 2012 18:00
first formula take host iops , read/write ratio and tells you how much backend iops will be generated. Your second formula looks odd, that website takes a number of drives and based on read/write ratio tells you how many host iops it will be able to service.
Take a look at this discussion, RRR and Jon explain performance calculations in great details
https://community.emc.com/thread/148025
RRR
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5.7K Posts
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October 3rd, 2012 02:00
As Dynamox pointed out our “Ask the Expert” discussion is a good source of how to do these calculations. If you have questions after reading the discussion, ask! Feel free to join the discussion.