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From Alex Huang <Alex.Hu...@citrix.com>
Subject RE: Supporting SolidFire QoS Before 4.2
Date Fri, 08 Feb 2013 00:20:33 GMT


> -----Original Message-----
> From: Marcus Sorensen [mailto:shadowsor@gmail.com]
> Sent: Thursday, February 07, 2013 3:29 PM
> To: Mike Tutkowski
> Cc: Edison Su; cloudstack-dev@incubator.apache.org
> Subject: Re: Supporting SolidFire QoS Before 4.2
> 
> He's saying that the VM can connect via iscsi directly to the
> solidfire device, rather than the host. You'd lose more performance
> that way and there's more overhead, but it would be a way to give
> individual VMs their own solidfire LUN.
> 
Marcus,

I'm interested in your comment here.  Why do you think vm having direct iscsi access actually
lose performance?  I would think it's actually faster because there's nothing translating
the raw LUN into a raw disk.

--Alex

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