How to figure out disks performance in Xen?

Posted by cpt.Buggy on Server Fault See other posts from Server Fault or by cpt.Buggy
Published on 2012-10-04T09:20:11Z Indexed on 2012/10/04 9:39 UTC
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Filed under:

linux

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Performance

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raid

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xen

So, I have a Dell R710 with PERC 6/i Integrated and 6 450Gb Seagate 15k SAS disks in RAID10, I have 30 Xen vps working on it. Now I need to deploy second server with same hardware for same tasks and I want to figure out maybe it's a good idea to use RAID5 instead of RAID10 because we have a lot of "free" memory on first server and not so much "free space". How do I find out disks performance on first server and find out could I move it to RAID5 without slowing down of whole system?

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