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тАО10-01-2007 02:08 PM
тАО10-01-2007 02:08 PM
HP unix striping
Hi, experts,
I am going to create lv with striping. May I know what is the recommended stripe size if the lv size is 70GB ?
thanks
ng
I am going to create lv with striping. May I know what is the recommended stripe size if the lv size is 70GB ?
thanks
ng
3 REPLIES 3
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тАО10-01-2007 02:58 PM
тАО10-01-2007 02:58 PM
Re: HP unix striping
The size of the LVOL doesn't really matter. There is really no answer except "it depends". If this is conventional striping and you are using a vxfs filesystem then typically optimum stripe size is 64KiB-128KiB. If you are doing extent-based striping then the smallest PE-size that will let you fully utilize your disks is the best size for performance. In most cases, extent-based striping doesn't really make a big performance difference because the smallest possible PE-size (1 MiB) is still a very large stripe size to efficiently spread i/o.
Your question is simply much too vague to answer.
Your question is simply much too vague to answer.
If it ain't broke, I can fix that.
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тАО10-04-2007 09:26 AM
тАО10-04-2007 09:26 AM
Re: HP unix striping
To add to A. Clay's comment, the storage type involved. When we moved from an XP512 to an EVA striping became a thing of the past.
Little more info, please.
Regards,
-dl
Little more info, please.
Regards,
-dl
"I'm not dumb. I just have a command of thoroughly useless information."
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тАО10-04-2007 09:38 AM
тАО10-04-2007 09:38 AM
Re: HP unix striping
And to add to Clay if I may.
If only doing lv striping which has no type of protection, again, it makes little difference especially when you have a disk failure and the data is now corrupt and unusable.
Pick a number from 64k-128k. ( power of 2k :)
If only doing lv striping which has no type of protection, again, it makes little difference especially when you have a disk failure and the data is now corrupt and unusable.
Pick a number from 64k-128k. ( power of 2k :)
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