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[Xen-users] HDD benchmarking

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] HDD benchmarking
From: Andrew Kilham <andrew@xxxxxxxxxxxxxx>
Date: Wed, 12 May 2010 00:07:02 +1000
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Hi,

I currently have a server with two 15,000rpm SAS drives in RAID 1. I am about to purchase a near identical server as I have run out of RAM and HDD space in my first server, and I am interested in finding out whether I can go for slower HDD's - ie I want to see if the HDD's in my current server are maxed out.

Is there any tool that I can use to benchmark/view the I/O stats of the HDD's, not for a particular domain, but rather for the entire physical server - ie I want to monitoring the physical HDD's instead of a VM's HDD's. Can I do this through dom0? Can anyone tell me the name of a program that can do this (CentOS 64bit)? And finally, is there a way that I can tell the actual max throughput of my HDD's so I can see how close to the limit they currently are?

Cheers,

Andrew

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