VServer vs Xen vs UMLinux: Mail, LAMP and Samba on one Server
I've been using gentoo for 5 years or so as of now but I always have been the desktop kind of guy. Somehow, I convinced my employers that we could use one server to accomplish multiple tasks at our company, mainly:
1) Provide file share through the network (Samba)
2) Host our website (LAMP); and
3) Our e-mail (Probably qmail)
4) Host a mysql based application that I'm developing.
The server is a Dell Poweredge T410 with Intel Xeon 5600 series, Two 1TB hitachi sata 2 hd in RAID 1 via sas i6R and 8 GB Ram (The best we could afford).
The thing is that I used to think that partitioning would be ok for host our website and our e-mails and our files in one single server, but thing is I figured (with help from another thread) that this would not be secure and now I can't decide if I should use user-mode linux, vserver or even use Xen to virtualize the web site host and the mail server.
So, which approach is more suited to this?
Thanks for all help in advance