better platform for virtualization

[Michael Lewinger]

Hi there,

I'd like to ask your oppinion on the virtualization of several WINDOWS
servers installed on a client's medium business server room. There are about
6 crucial servers (priority, exchange, file server, and some others) that
need to be accessible when they fail. Currently, each server has its own
RAID storage. There is only 300GB of data to be kept on those servers
(mostly exchange and file server). The virtualized servers should become
alive when one of those main servers dies, and theoretically, no more than 2
VMs should be running in parallel.

What would be the best virtualization platform for such a requirement ?
Windows 2008 server, or XEN ?
Would a fast single Xeon processor be able to handle this requirements ? 8GB
or 4GB ?
Would you consider VMWARE on top of CENTOS ?
Would you suggest that the data should already be kept on a NAS appliance as
of now, even before DRP takes place ?
(If yes), which NAS solution would you use ?
Would you consider a cloud-based backup program such as Crashplan to backup
this data ? Is there any other enterprise-level backup app that can store
backups on cloud storage ?

I appreciate all your answers !

Michael
--------------------------------------------------------
Michael Lewinger   -   MBR Computers
          http://mbrcomp.co.il
       support at mbrcomp.co.il
                054-2284055

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