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December 4th, 2011 19:00
How to use Analyzer to estimate data change rate per second for journal sizing
Dear all Bros,
I am new to EMC analyzer. Our company have virtualized the SQL Server in delicated VM datastore. I have enabled the analyzer logging for a week.
I have obtained stats from this LUN. By RP manual, there is an important parameter - data change rate per second in journal sizing formula.
I am not sure which metric in Analyzer is corresponded to this data change rate.
Bandwidth MB /sec can be used or not?
thanks,
Mike
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ankur.patel
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December 6th, 2011 08:00
There is a metric in analyzer for writes MB/s, this will give you the worst case change rate as analyzer will capture the bandwidth even if the same block is changing over and over. Recoverpoint being async may not capture all these writes. This is why I say this is the worst case.