Why not use Sun Solaris when you migrate legacy Applications into the Cloud ?
Instead of rising the complexity with
- Maintaining one Operating System
- Maintaining an virtualization layer like Xen, Vmware etc. with an included OS
why not reduce the complexity and
- Run Solaris or OpenSolaris
- Use ZFS as a cool Filesytem/VolumeManager
- Use Solaris Container to get the flexibiliy you need....
Find more information about why Solaris
Good advice, how to to simple and secure patches sorry until End-of-Mai in German only
View the comments to get all the information you may need to run a complex, virtulized environment without any additional tool.
REDUCE Complexity is the first rule :-)
On the same Wiki you will find some more generic information on "Why you should run an SAP Environment on Solaris instead of Linux"