I use the built in backup utility for Windows 7 because it's automated and flexible enough to allow me to schedule a daily shadow copy backup of particular files and folders directly to a separate internal RAID 0 array (2 x 1TB). It's also lightweight and stays out of the way.

For off-site backup purposes, each week I copy the contents of the internal backup from the RAID 0 array to an external 1 TB drive. I then store move this drive to a different building.

The copy from the internal backup to the external backup typically works like this:

1. mount and erase contents of external drive
2. highlight "file" on internal drive, hit CTRL+C
3. CTRL+V on root directory of external drive

Is there a better way to synchronize? Microsoft's SyncToy application does a pitiful job, and often leaves the folders not truly synchronized... which completely defeats the ability to use the backup's restore feature.