Hello,
Sorry, I'm sure this isn't the answer you were hoping for but I think you need to open a support case. My guess is that you have a failed/failing controller. You are also extremely far behind on the firmware. Updating the firmware may be part of the recommneded resolution by support but you'll need to follow a specific upgrade path to get to the latest (GL220P010) since you cannot do a direct upgrade from the version you are on.
Yes, it also appears that a certain server is trying to frequently login via SSH? Perhaps you have some sort of monitoring script installed and it's using an old password? I'd investigate on that host and see what is making the SSH call and why.
Sorry I couldn't be more helpful.