I assume there is not much we can do

I have 5 servers (Ubuntu 18.04) with 5 JBOD connected to each via SAS cables. One to one relation between the server and the JBOD as of now. Each JBOD is 1 PB. We have created 4 mounts of 250 TB on each server. Dual 10GB connections bonded on Ubuntu server We architected this differently but now it ...