Tarsnap outage postmortem
It sounds like most of the 26h downtime was spent restoring backups. Incidentally, this is exactly the reason why Tarsnap is unusable for me for production environments. Backup restoration (as a user) is excruciatingly slow. When my systems are offline,  I have no patience to wait for hours for my backup service. Maybe things are better now; Last I tried was a few years ago when Tarsnap took on the order of magnitude of one hour to restore a backup of a few GBs.