Fresh from Citrix iForum, there is naturally a lot of talk about Xen servers. We're pretty excited, especially in regards to the price! Xen is coming on strong in feature sets comparable to that of VMWare. Enclosed is a brief feature comparison amongst the Xen offerings, along with the link to the Xen server datasheet for v4 for further details. For the most part, there is little difference between the express and standard editions, aside from administrative model, cpu and memory capabilities, and of course, Citrix support. The enterprise version is comparable to VMWare ESX server, just without the sticker shock.
Citrix XenServer Exress Edition:
- Single server administration model
- Supports up to 4 Gb of memory
- Supports 2 CPU sockets
- Supports 4 Guest operating systems
- Supports up to 4 GB of RAM per VM
- No resource pooling
- No shared storage
- No XenMotion (the VMotion equivalent from VMWare)
- No VLAN capabilities
- No QoS
Citrix XenServer Standard Edition:
- Multi-server administration model
- Supports up to 128 Gb of memory
- Supports Unlimited CPU sockets
- Supports Unlimited Guest operating systems
- Supports up to 32 GB of RAM per VM
- No resource pooling
- No shared storage
- No XenMotion (the VMotion equivalent from VMWare)
- No VLAN capabilities
- No QoS
Citrix XenServer Enterprise Edition:
- Multi-server administration model
- Supports up to 128 Gb of memory
- Supports Unlimited CPU sockets
- Supports Unlimited Guest operating systems
- Supports up to 32 GB of RAM per VM
- Supports resource pooling
- Supports shared storage
- Supports XenMotion (the VMotion equivalent from VMWare)
- Supports VLAN capabilities
- Supports QoS
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