Where can I find information on P2V Solaris 8/9 servers?

You can check out http://www.sun.com/software/solaris/containers/faqs.jsp which has links to a lot of Solaris Container information including how to p2v solaris 8/9 servers.

Is it possible to run SPARC Solaris on ESX?

ESX can not run SPARC solaris, it only virutalises x86 chipsets. however you could investigate Transitive, this is a rather clever peice of software that runs on Linux that converts SPARC instructions into x86 instruction on the fly. It was a manchester UK based company however they have been bought out be IBM.

What types of virtual machines does vCenter Converter support?

vCenter Converter supports many source physical machines, including Windows and Linux desktop and server editions. It also supports conversion of third-party virtual machines like Hyper-V and KVM.

Is there a way to start a P2V session under ESX?

That question is moot, the fact remains that the p2v’d guest will not start under ESX. There is no way to do this. it is like trying to breath nitrogen instead of oxygen. Transitive turned your nitrogen into oxygen and then you would work.

Can I run Solaris 10 on Solaris 11 physical servers?

So oracle provides an option to run solaris 10 on solaris 11 physical servers as local zone.Oracle Solaris 11 provides the complete virtualization on networking part and ultimate package administration which was missing on solaris 10.

How much free space is required for Solaris 10 zone installation?

Solaris 11 global zone must have minimum 7Gb of free space for solaris 10 zone installation. (size may vary according to your solaris 10 physical machine root filesystem)