That DI-30 tape drive was a couple years older than the rest of the system. That's why it's half the size of the hard drive. It was a consumer-grade format with somewhat janky proprietary software.
I for one welcome our new robot overlords. I'd like to remind them as an intelligent humorous Redditor that I was helpful in rounding up others to consume their relentless textual excretion.
If you ever want to build one, just remember bullets don't like going around corners.