Honestly, 10PB is small potatoes nowadays - and it's not "armchair quarterbacking" to think about storing it in a distributed environment

I work with one customer right now that's storing something like 27PB across ~100 systems for analysis on a rolling 90-to-365-day period (and they're a relatively small customer) with Splunk

If they were doing more storage than analysis, that storage cluster would be substantially smaller