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How Does Xen Compare?
Performance: 1-20% actual overhead (older claim: 1-5%)
Scalability: 10s of Vms
Memory overhead: Negligible for para. ~12MB per VM for full.
Hardware-enforced fault isolation between VMs: Yes
Ability to dynamically grow/shrink hardware resources: Yes
Open source
Commodity hardware
Ease of deployment: Use YaST
Support: From Novell