On Fri, Aug 23, 2013 at 1:57 PM, john boris <jbo...@lopsa.org> wrote:
> Here at $work they have decide to get one server to handle 17+ of my > current servers. I am doing this right now with two HP DL-160 G5. Stupid HP > has some weird Memory configurations. Anyway those two HPs sound like Jet > engines although they are in our NOC I don't hear them. > > This server will be running Ubuntu 12.04 LTS with the latest Virtual box > software. It will hold 17 to 20 SCO legacy systems who will get 512mb of > RAM apiece. They are character based without the X system running and the > sessions on there are just Telnet (well ssh) but still very low overhead. > > We normally buy HP or Dell (whoever has the best bang for the buck. > > Any pointers are greatly appreciated. Please no flames that I am keeping > SCO machines around. I know about them but you have to play with the cards > that are dealt you. > > -- > John J. Boris Sr. > Member of LOPSA Board of Directors > League of Professional System Administrators (lopsa.org) > > Have you considered using Linux KVM or VMware ESXi (free) as your host OS, instead of VirtualBox? Vbox is great to run on a workstation, but KVM or ESXi will give you much better performance as a server, as this is what they are built for. You will also get server-level features, like the ability to oversell RAM, dedicate resources to particular VMs, etc... I think you're biggest question is how the SCO systems will handle operating in a VM environment. There are some special considerations, such as if they need hardware access to anything, and how they keep their clocks accurate. As far as servers go, pretty much anything should support virtualization these days. I've had no issues with Dell R6xx and R7xx servers. Also, I don't think a 17:1 ratio is really that crazy, given they are all pretty small as far as RAM usage goes, but it would depend on the overall CPU and I/O usage. ❧ Brian Mathis
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