Netbackup Appliance 5200 - Disk Volume is down (2074)

Hello,.

I have two Netbackup 5200 appliances with version 2.5.1 and each one acting as master server.

Each one is backing up its site and replicating images to the other with A.I.R. technology.

From yesterday one of the two appliance is down with the error 2074 (disk volume is down) and it goes down even if I try to force the state UP.

In the attachment file you can find a portion of the output of bperror -disk command

Thanks,

Gildo Campominosi