My wiki also got affected by the harddrive. They send out a message with everything they knew pretty much immediately even to people not affected by the error and continued to update as they learned more. Not sure why you seem to think it took "weeks". For a volunteer-run service they've actually been quite on top of it and compassionate in my experience
You're right, it was 10 days, not quite weeks. It's not important but here are some of the miscommunications and apologies:
November 18: "The cloud server which hosts one of our database, db141, experienced a disk issue. As a result, a small number of wikis hosted on db141 are unavailable. [...] While cloud14 has been reinstalled, we will have to send the affected disks to professional data recovery. The earliest ETA for having wikis restored is potentially early next week. [...] Our number #1 goal is to restore the data on the disks affected so that wikis are restored versus using a backup which could be various days old"
November 24: An update to the situation was embedded in an unnecessary meeting on Discord: "Our Miraheze Meeting is starting now! Join us while we talk about everything Miraheze, such as recent policy proposals and we'll be providing an update on the db141 issue We'll answer any questions you have and will listen to any comments or concerns."
November 28: "I understand the frustration, and we have not yet given up hope on data recovery, so you can still wait if that is your choice. But I also don't want to give people any false hope. It is not looking super great for data recovery. I won't completely rule it out yet, and I can't say anything definitively. Venues will be opened shortly for requesting that wikis be recreated from scratch (with images at least still intact) if that is your wish [...] in the recent Miraheze Meeting it has been brought up that our communication has been less than ideal, and some feel some questions have been dodged and/or ignored. I have gone back and looked at our responses to some questions, and I can see how this could be assumed [...] I would like to clear one thing up now. Something that seems to keep being brought up is that we sent the drives to a data recovery service. This was not true [...] Owen currently has the drives and has for a few days. They are not at a data recovery service. This was due to some internal miscommunication within SRE, and is something that is being addressed [...] Once again we apologise for this miscommunication and we are working to resolve our internal communication problems [...] Indeed, over the last few days, it would appear that information was not properly being relayed within our own team which led to some breakdowns in communication. Clearly, different members had different insights and views on certain topics. This has led to a strain in communications and we are working to rectify that."
I don't think it was ever explained how the data was recovered.
My guess is that they used some of the XML dumps we of WikiTeam keep at https://archive.org/details/wikiteam , that not everyone at Miraheze was necessarily aware of.
It was your bog-standard disk crash as I understand it. Pros were (eventually) brought in for data recovery. But I also understand the backup for the wikis on that server (like mine, one of the dead ones) was on the same server, which doesn't sound like a very good plan. If a backup was stored elsewhere, the dead wikis would have been restored in a very short time. Lesson learned, I hope.
I got most all of my data restored, but there was a temporary problem of deleting and replacing files that the server programming thought still existed. That was fixed quickly.
