Backups taken with version 1.1 of Apple Tape Backup 40SC Software often
take less time than those taken with version 1.0, even with exactly the
same amount of data to back up. And a backup that requires a second tape
cartridge with version 1.0 may need only one cartridge with version 1.1.
Here's why:
- Version 1.0 backs up all sectors from the hard disk, both used and
unused sectors. This is why version 1.0 always needs a second tape
cartridge to back up a 40MB disk, even if the disk held less data than
the tape theoretically holds, 38.5MB.
- Version 1.1 backs up only through the last used sector. Unused sectors
may still get backed up, but none that are beyond the last used sector.
Version 1.1 needs a second tape cartridge only when the last used sector
is beyond the 38.5MB point on the disk. If, for example, you have 30MB
of data to back up, only one tape is required.