2oldman wrote:
You can't, any more than you can know your self-made backups are fail safe.
OL backup is just another tool, not something that's guaranteed 100% reliable.
I never said it's foolproof or guaranteed.
All I'm suggesting is IMO you have a better chance of salvaging your system/data/configuration files from a local source than relying on the Internet.
I read most of the issues posted here and I would recommend the large & inexpensive stand-alone drives for backup. You can save multiple copies just to be sure you double your chance. Of course the entire drive could fail but if your PC and backup drive both fail, I suspect you have more important concerns than data backup.
Most problems I read are internet related - can't connect, download doesn't work, error messages, file doesn't exist, forget a login or password and the list goes on. That kinds sums it up for me.