[Xen-users] New user question...

[David <xendev@xxxxxxxxxxxxxx>]

Hello,

I am new to virtualization and even newer to Linux.

The FAQ and documentation for Xen seem to presume a certain level of 
prior low-level Linux and/or Xen knowledge.  (None of which I have...)
Currently, my virtualization experience is mostly limited to the VMware 
Workstation products which seem fairly straight forward from a user's 
stand point.
Clearly, Xen is a very different beast from even VMware ESX server...

Can someone help answer up a few questions for me?

-- In the VWware world, each domain has the full illusion a system to 
it's  self.  I get the idea that this is not the case in Xen, but how 
can this be while still enforcing the integrity of each domain?
-- In the VWware world, I/O (Disk, Network, HID, VGA, etc..) is handled 
by "virtual hardware devices" that can be assigned to each domain at 
will, and are in turn somehow securely mapped and shared to their real 
world counterparts.  Is this the case in Xen?
-- In the VWware ESX server product, identical memory pages among 
similar domains can be transparently consolidated to free up more 
physical RAM for the domains to use.  Is this also the case in Xen?

Thank you,
David

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