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тАО01-09-2006 05:20 AM
тАО01-09-2006 05:20 AM
I want to calculate I/O bandwidth of my disk array. It is an EVA 6000 with 28 disks.
I found the following link in regards of my question. In the below link Uwe, offer a formula:
I/O bandwidth / number of disk / chunk size =IOPS
They talked about an EVA 4000.
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=977114
Now, I want to calculate maximum I/O bandwidth of my EVA with that formula. However I do not know what chunk size is and how much IOPS each 15rpm disk has.
Please advice.
Solved! Go to Solution.
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тАО01-09-2006 06:52 AM
тАО01-09-2006 06:52 AM
Re: EVA6000 I/O calculation
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тАО01-09-2006 07:34 AM
тАО01-09-2006 07:34 AM
SolutionThe EVA3000/5000 use a chunk size of 128 KBytes - my guess is that the 4000/6000/8000 use the same size.
The formular only makes sense for large sequential transfers - random I/Os with large seek distances will kill result in smaller MB/s throughput.
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тАО01-09-2006 07:47 AM
тАО01-09-2006 07:47 AM
Re: EVA6000 I/O calculation
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тАО01-09-2006 03:43 PM
тАО01-09-2006 03:43 PM
Re: EVA6000 I/O calculation
How much IOPS does a single 15K disk has? What about 10k disk?What can be the maximum IOPS of a disk?
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тАО01-11-2006 04:10 AM
тАО01-11-2006 04:10 AM