Whether to virtualise our main servers
I am due to replace our two main servers in the Easter Holidays. I have been wondering for a while whether to introduce virtualisation with this transition, but not got around to seriously investigating. It would be really helpful to have some feedback on whether this is a sensible idea.
We currently have two servers, one at each end of the school, that both act as file server, DC, DHCP, DNS, print server, WSUS, anti-virus management, and practically everything else. The idea is that if one is down the other can maintain most functions: the files are replicated with DFSR. The replication works fairly well, but we have never had to use the redundancy in practice for any significant period.
Then we have a MIS database server, a web server (that also does WDS because that was the only place I could fit it) and a media server (basically an old client with a big hard disk for sticking all the videos on). I think these are significantly underutilised compared to the main servers.
My hope would be that virtualisation would allow easier disaster recovery and better balancing of the load between servers, but I am not sure we have a large enough network to make it worthwhile (about 100 computers, 400 users).
I have used VirtualBox quite a lot with virtual client computers, but not touched server virtualisation software yet, so I am worried about whether I have time to get up to speed on virtualisation over this term.
What do you think: should I plan to visualise?