[Xen-users] HDD benchmarking

[Andrew Kilham <andrew@xxxxxxxxxxxxxx>]

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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