Loki archive management - How to archive logs

In our production OpenShift cluster, we use loki to collect app logs.
We have to keep the logs for 5 years due to regulation.
As the number of files increase, OpenShift and CephFS cannot manager loki files.
We want to move the old logs.
Is it possible to archive by moving loki files to another place?
Do we need to move some other files, config etc. other than the current log files?

/data # find . -type f | wc -l
By the way, we have more than 1 million files, almost 1.4 million.