so some colleagues and me are planning to merge our VPS Servers to one big standalone and each participant gets a separate Virtual Machine.
We split the available resources, so each VM gets about one quarter of the host resources (minus the resources for the Host System).
This there any reference which (free) Virtualization to choose? I worked a lot with VMWare ESX Barebone Servers and the whole Infrastructure Packet of VMWare and liked it a lot.
What Host System should we take? I tending to choose Debian 5 Lenny over Ubuntu 9.04 for overall security and stability matters (the Host System is going to be the SPOF). Is 512 MB RAM enough? I googled a lot but didn't find any real guidelines what to do, so I'm asking your expert opinions :)
Any help is appreciated. Thanks!