I'm testing out methods of efficiently validating our backups:
allocate channel c1 device type disk;
allocate channel c2 device type disk;
restore validate database;
The host that's executing the above has 4 dual core processors. Is a general rule of thumb to limit parallel operations at max processors-1? In this case, 7 would be the highest number of channels I could allocate?
I was initially executing the validate with a single channel before I began to investigate the potential performance enhancements of multiple channels. I'm searching for the appropriate setting for my purposes.