Fellow IT geeks - do you recognise this?

[Lawrence]

Unfortunately, that was the backup :|

I have an annoying situation where I keep running out of space... so not everything is in duplicate across all of my drives. Mostly I was protecting against hardware failure (the 4TB is a RAID 5 volume)... there's no accounting for human stupidity

It's not a backup if it's the only copy
I have a buffalo terastation going spare if you're interested, ~2.7tb raid 5