I'm starting to look at virtualisation but I know very little about it. 
I've read a bit about Xen & KVM and have had several companies visit 
College drumming on about VMWare (very expensive but nice features) & M$ 
HyperV(quite cheap for education). I would really like to stay open 
source but I need to read more about this as it'll be for "business 
critical" systems so stability, flexibility and easy management will be 
very important.
Can anyone recommend a good book / books for me to start me down this 
road :-)
Thanks
Brian
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    The views expressed here are my own and not necessarily
 
                the views of Portsmouth College