I have a little yet productive (then important) single-node ELK stack version 7.9.3.
In my unexperience I didn't properly took care of disk space...so I have a 200GB data partition at around at 90% disk usage, while I have another 100GB partition at around 2% disk usage.
I've configured ILM to keep then rotate data at 180 days (6 months) but currently it's not enough space.
I want to use that other partition to store index data, but according documentation Elasticsearch won't balance data across partitions and also I've read that append a new path to data.path could make shards problems.
So, what would you advise me to take advantage of that currently unused disk space on another partition inside same single node?