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XenServer sets a new standard for free virtualization, with powerful features such as live motion, centralized multi-node management, and multi-server resource sharing. While basic hypervisors such as VMware ESXi can be obtained for free, they need costly management add-ons to meet real-world needs.


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“Does XenServer 5 pass the “first impression” test? Yes. It offers speed, flexibility, scalability, ease of use, and a price that will make your accountant grin. XenServer 5 is a success from download to deployment and a win for Citrix and users alike. There’s much to like about XenServer 5 and very little to dislike. An enterprise-level product built by one of the world’s leading technology companies that’s also free — what’s not to love?”  
Ken Hess, Linux Magazine

Features included at no cost

Citrix XenServer VMware ESXi
Bare-metal hypervisor 64-bit 32-bit
Max virtual CPUs 8 4
Windows® and Linux guests
Unlimited servers, VMs, memory
P2V & V2V conversion
Shared SAN and NAS storage
Centralized multi-server management  
Resilient distributed management architecture  
Live motion  
Shared VM template library  
Centralized configuration management  
Virtual infrastructure patch management  
Intelligent initial VM placement  
Intelligent server maintenance mode  
Fine-grained CPU resource controls  
Hot-swappable disks and NICs  

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