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тАО01-29-2009 02:43 AM
тАО01-29-2009 02:43 AM
MSA 1500 Performance Problems
We are experiencing very slow IO during our backup routine. We have run the perf tool on each controller during the backup window, but we are not sure if any of the results represents a bottleneck.
We can see that LUN 3 & 5 have the highest load and we are looking at seaperating them onto different controllers.
I have attched an excel document with the relevant figures
Thanks in advance
We can see that LUN 3 & 5 have the highest load and we are looking at seaperating them onto different controllers.
I have attched an excel document with the relevant figures
Thanks in advance
2 REPLIES 2
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тАО01-30-2009 06:21 AM
тАО01-30-2009 06:21 AM
Re: MSA 1500 Performance Problems
distributing luns across the controllers is the right direction, but if your hitting the same Array set w/ I/O from 2 different luns, 1 on each controller you won't get much more perf from the MSA contrl. it only runs at 160mb/sec anyway.
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тАО01-30-2009 06:26 AM
тАО01-30-2009 06:26 AM
Re: MSA 1500 Performance Problems
We have only configured a single logical drive per array.
The MSA appears to handle more read requests than writes, we are also thinking about adjusting the cache ratio from 50/50 to 60/40 or 70/30
The MSA appears to handle more read requests than writes, we are also thinking about adjusting the cache ratio from 50/50 to 60/40 or 70/30
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