So what have I learnt?
That cigarettes do NOT help when you're panicking and stressing. Really don't know how people smoke and enjoy it, it sucks.
Also learnt that having a good mate to talk to me and keep me calm has helped save the day. I was freaking out!
Starting to look a bit better now. Got an old (1 year old) backup restored. Rebuilding the RAID now. Need to rebuild the config on this backup as it's way out of date. Upgrade mail service, apply updates to Windows, install new security software etc.
I don't see any sleep for me tonight