Am 15.05.2012 23:42, schrieb Larry Martell: > On Tue, May 15, 2012 at 3:37 PM, Frank Cox <theatre at melvilletheatre.com> wrote: >> On Wed, 16 May 2012 00:31:22 +0300 >> Jussi Hirvi wrote: >> >>> BTW, the two servers are virtual machines in one and the same physical box. >> >> What's the point of that? (Genuine question.) >> >> One server here, one across town, or even two separate boxes in a single room >> -- sure. But in the same box? If the the box is on fire, now you're out both >> your main and your backup server. >> >> I must be missing something; what is it? > > I've never been a fan of doing that, but I've recently been seeing it > at a lot of clients. They have 2 older machines each running its own > app. They get a new honking big box with enough HP to run both apps > and they create 2 VMs one for each app. Yes, one point is to consolidate using virtualization. It is done in small environments and in really large ones. A very different thing is to run a main and a backup mail server on the same virtualization host as 2 VMs. Alone the fact to build up a setup with a backup mail server is nowadays to 99% a design flaw and non-optimal. Alexander