[Question] How do I add storage locations to Lemmy?

Soon, I’ll need to increase the storage capacity of my Lemmy server. I use a Digital Ocean VPS running Debian 11. I don’t really need to increase the RAM, CPU, or other core system resources so I planning on adding some block storage to my VPS. My question is: How can I tell Lemmy/Pict-rs to store/retrieve new data here...