Backing up a Buffalo NAS results in a lot of warnings or failure.
If you find that your NAS is used often by users when the backups run, files that are held open can not be backed up. If the NAS contains files with non-UTF8, backups and restores could fail.
In these kind of situations, our recommendation is to place the data on a Virtual Machine that resides on VMware ESXi that Unitrends can backup using its Virtual Protection capabilities using the VMware APIs. By having your data as a VM, we can use block level crash consistent protection, bypassing the problems of open files and use of non-UTF8 characters.