Tony Cooper
I know you can set a back-up protocol to back up multiple drives, but the one-drive system works for most people.

nospam
what you don't know is that backups can be automated and the number of drives makes no difference. the computer doesn't care if it's one or 15 drives.

Eric Stevens
It's a rare computer which can back up even two drives at once.

The operator can set up an instruction to back up, say, fifteen drives but there almost certainly be a bottle-neck somewhere in the system which means that you can only back up one drive at a time.

It might look like backing up fifteen drives at once but really it's running fifteen drives in parallel with time-sharing between the tasks.

Apart from that, I agree with you that you can set up a command which, when issued, will start to back up as many disks as you have got.

Tony Cooper
I know one fellow who uses multiple drives, but he's heavy into stock photography and keeps all of his background files on one drive. He's got terrabytes of skies and other stock backgrounds.

nospam
lots of people have multiple drives. it's not unusual.

i just added another drive to the mix yesterday and it already has 300 gig of stuff that had previously been scattered among several other drives.

Eric Stevens
So you too are heading to the 'all on one drive' situation. I've got all my photos on one drive in one location (which is not where MS would have me put them). Mind you they are backed up to two other drives as well.