[CentOS] compaq dl380 raid 5 striping size using built in scsi controllers ??

Chris Mauritz chrism at imntv.com
Wed Nov 9 01:08:32 UTC 2005

Robert wrote:

>pre centos install raid5 setup on a compaq dl380
>is asking for stripe size.
>i am using one of the built in controllers and the machine has just a gig of
>ram and 4 18.2 gig 10,000 rpm drives
>machine will be an email server with simple web hosting as well.

Moving around large files (like a streaming media or file server) will 
likely benefit from larger stripe sizes.  For an email server, 
increasing the size of the stripe over 16k probably isn't going to buy 
you much, if any, performance benefit.  The best way to tell is to 
actually test with your typical data pattern and system load to see 
which provides the best bang.  I'd probably go with 16kb in your 
situation unless you've got time to test and fiddle.


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