Pass-Through or Fixed VHD for Exchange 2010 DAG

Dear All,

I’m planning to use exchange 2010 DAG in my Hyper-V cluster environment, for databases and logs files, which is better, to use pass-through disks or to use fixed VHD files in the same VM’s??

I heard that the differences between both is very limited and using VHD is better than pass-through???

Kindly help if there is any link from Microsoft which describe that.

Thanks
Rafat
ACS2012Asked:
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davorinCommented:
The performance difference is getting smaller and smaller and benefits of VHDs are quite important to me, so my first choice is dynamic VHDs (W2008R2).
It is not exactly Ms whitepaper, but it could be of some help to you:

http://clusteringformeremortals.com/2009/09/25/hyper-v-pass-through-disk-performance-vs-fixed-size-vhd-files-and-dynamic-vhd-files-in-windows-server-2008-r2/
http://www.altaro.com/blog/hyper-v-guest-design-fixed-vs-dynamic-vhd/
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