Does it make sense to create a file system with replication?

Question

replication

Hello, not long ago, both hard drives (raid 1) broke down in my Hetzner data center in Germany, the data was successfully pulled and restored, but the service was unavailable for more than a day. Thinking about how to prevent this, I thought about various file systems. Studying them, I came to the conclusion that this is not quite what is needed in the realities of a small project. I would like to have a master-slave replication filesystem to other servers without waiting for writes to them. As a result, if I lose the master, I can easily replace with minimal losses. Is this a good idea or is there something better?

Answer 1

Replication is obviously necessary, since your system requires high uptime.
However, how exactly to do this depends directly on the current implementation and business logic.
Most likely, you do not want to replicate the file system , but some specific files . And then it may be easier to raise several backends that write to S3 . And let them fall one by one - the system will be available at the same time. Or maybe some other solution will have to be found.