As usual with IT, things aren't always cut-and-dried. This is how our current server is at the moment. we are struggling to get it to stay up and our hosts are scratching their heads as well. With this in mind, we have begun the process of looking for a new server with a more robust and professional specification. It's early days with that, but we're going to be working on that in the background with a view to bringing it on-steam at the earliest practical (and sensible) time.
In the meantime, we'll try to keep the current server upright as much as possible, but the final switchover will definitely require some downtime in order that we don't lose any data, or any of your pearls of wisdom.