How to update Nextcloud without stopping the operation of the enterprise?

Question

Clustering

Colleagues, good afternoon.
A task has arrived from above, there is an old version of nextcloud - 1 server, you need to update to the latest one. BUT!
Work must not stop, because access to files on the server should be 24/7
How can I implement the update process?
Is it possible to raise the cluster and load balancer so that if the server goes down for updating, the files are still available?

Advise, can anyone come across?

Thanks in advance!

Answer 1

Make a complete copy of the server and redirect it temporarily to it... but again, you won't be able to do this without stopping.
Explain to the authorities that you need to stop for 30 minutes, upgrade normally and not brainwash. For example at night