Is it standard to (in addition or instead) to have something more general/forward-looking like: how do you watch other providers' postmortems and apply the lessons to your own system?
> - Can you restore data for a single customer, and if so, what is the RTO for that operation?
If I were to aim something at this specifically, it'd be: can you restore data for N customers or N% of customers, and if so, what is the RTO for that operation?
I mentioned in another comment that Gmail had a similar outage in which they had to restore from tape. https://news.ycombinator.com/item?id=31017160 They had a tool for restoring a single account but not for restoring N accounts in bulk, which would be significantly more efficient than doing the one-account process N times. (E.g., in the case of tape backups, imagine the difference between pulling data from the tape library sequentially for each user vs all N at once, particularly when one tape may hold data for many of these customers.)