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тАО08-17-2009 05:39 AM
тАО08-17-2009 05:39 AM
Hi,
Could someone point me in the right direction as for testing the performance of a default configured 2012i dual controller MSA on a 1Gbit lan?
What should the average write/read speed be for the datahost and other clients on the lan?
Regards
Lars Kragh
Could someone point me in the right direction as for testing the performance of a default configured 2012i dual controller MSA on a 1Gbit lan?
What should the average write/read speed be for the datahost and other clients on the lan?
Regards
Lars Kragh
Solved! Go to Solution.
2 REPLIES 2
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тАО08-17-2009 06:42 AM
тАО08-17-2009 06:42 AM
Solution
I've used "iometer" to produce some load.
There is no real "average write/read speed" - this all depends on the access patterns.
For example: I've used 32 or 64 KByte pure sequential read I/Os and was able to get about 100 MegaBytes/sec from a 4-member RAID-5 volume.
Then I've switched to 512 byte(= single block!) I/Os. The throughput dropped to about 5 MegaBytes/sec, but I saw many, many, many more I/Os per second.
There is no real "average write/read speed" - this all depends on the access patterns.
For example: I've used 32 or 64 KByte pure sequential read I/Os and was able to get about 100 MegaBytes/sec from a 4-member RAID-5 volume.
Then I've switched to 512 byte(= single block!) I/Os. The throughput dropped to about 5 MegaBytes/sec, but I saw many, many, many more I/Os per second.
.
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тАО08-17-2009 10:45 PM
тАО08-17-2009 10:45 PM
Re: Performance on 2012i dual controller
Thank you Uwe.
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