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March 29th, 2015 22:00
how can we calculate "Average busy queue length" of LUN?
How can we calculate "Average busy queue length" of LUN using CLI(naviseccli).We don't want to use unisphere analyzer as it impacts system performance.
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Roger_Wu
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4K Posts
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March 30th, 2015 19:00
You can set a higher interval for Unisphere Analyzer.
AnkitMehta
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March 31st, 2015 04:00
No. You can refer · Performance Analysis for Clariion and VNX – Part 1 by Rich for detailed information
GAURAVGARG1
9 Posts
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March 31st, 2015 04:00
Our team agreed on not to use unisphere analyzer.Any other solution?
GAURAVGARG1
9 Posts
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March 31st, 2015 21:00
I read article suggested by you.It uses unisphere analyzer for these. But our team agreed on not to use unisphere analyzer.Any other solution?
brettesinclair
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715 Posts
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March 31st, 2015 21:00
Capturing statistics/data logging doesn't impact much on an array.
Are you running your arrays that close to the edge that the small increase will have an impact ?
FWIW, I have data logging running 24/7 on all my arrays.
kelleg
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April 2nd, 2015 08:00
Depending on the array model, running Data Logging will add a small amount of overhead (5%-10%).
This is dependent on the number of LUNs, the number of hosts, the number of disks.
If your array is a older CX, the larger the configuration of the array, the more overhead.
If you have a VNX, as the processors are more powerful, data logging should not be that much overhead.
If you already have Statistic Logging enabled most of the data collection is already accounted for.
Unless your array is running over 80% Utilized (and how can you tell without Statistics Logging enabled) Data Logging will not cause that much of a problem.
I'd recommend that you run a test - with Data Logging enabled and without it and see what impact that has on performance.
glen