I am somewhat puzzled by the idea of on-line backups.

I think I must have a fundamental misunderstanding of something because I can't see how it can be done in any reasonable time fame.

Take my system, for example. 4 TB of data = 32 Tb of data, upload speed averages 1.5 mbps.

32x10^12 bits divided by 1.5x10^6 bits/sec = 21.33x10^6 seconds = 8 months, more or less. How could I conceivably spend the better part of a year, 24 hours a day seven days a week, doing a backup? It doesn't seem feasible to me.

Am I overlooking something here?

tanstaafl.