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тАО09-30-2010 10:13 AM
тАО09-30-2010 10:13 AM
VSA Performance
Can someone explain what effect this setting in the CMC (ver 8.1) has on storage performance? I have been running performance tests using IO meter, but moving the slider does not seem to have much effect in the numbers I am seeing.
Thanks.
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тАО10-01-2010 07:25 AM
тАО10-01-2010 07:25 AM
Re: VSA Performance
Increasing this allows internal cluster restripes to complete faster, but could degrade the performance of your iSCSI volume traffic. If you are doing maintenance during a down time you can crank this up to allow it to complete faster, but be sure you drop it back down when you are done and before you start having significant iSCSI traffic to your volumes.
I think in version 8.5 the default is 16MB/s instead of 4 MB/s
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тАО10-01-2010 10:36 AM
тАО10-01-2010 10:36 AM
Re: VSA Performance
I have combed these forums and google looking for other settings to play with, but I haven't come up with anything that provides a noticeable improvement.
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тАО11-09-2010 04:55 AM
тАО11-09-2010 04:55 AM
Re: VSA Performance
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тАО11-09-2010 06:07 AM
тАО11-09-2010 06:07 AM
Re: VSA Performance
There is not much tweaking that can be done to the VSA, since it is a software virtualized RAID 0 stripe with limited network options (same as with disk, you best option for improving performance and/or failover is via the virtual network stack)