The local controller is a Dell HBA330 Mini.
The hardware isn't showing any signs of suffering.
I think it's a big problem that the software can't take advantage of the hardware it has available, don't you think?
I created it, and everything is...
I'm currently trying to balance local disks with iSCSI disks, but I'm still getting errors.
There is something seriously bugged in PBS.
It can't be a disk IO problem, now only two servers are backed up on the iSCSI disks and still there are errors.
After a long time, I finally had the possibility to perform backups to local disks on the machine.
Unfortunately the result has not changed, I still have errors, specifically yesterday I had 18 failed backups.