I make bootable clones of my laptop hdd with SuperDuper. I use 2 drives and an external SCSI drive enclosure for this. This way, I have a weekly copy and a dail

I make bootable clones of my laptop hdd with SuperDuper. I use 2 drives and an external SCSI drive enclosure for this. This way, I have a weekly copy and a daily copy. And when my laptop hdd fails I can switch over to a good copy with no downtime. I also use Dropbox for a certain subset of my documents, so that adds another layer of backups w/ partial rollback as well. Online backups are good, but an external SCSI enclosure costs at most $40 + the cost of an internal drive, which is cheaper, and allows faster recovery.