This is the most convenient way of backup, and is normally used for essential documents on your machine.
CD ROM is also the most compatible device which will work on any Mac or PC that is equiped with CD ROM drive.
Drawback is the amount of data that can be backed up which is only 650MB.
DVD allows you to backup substantial amounts of information.
Ideal for backing up large Music, Pictures or Movies libraries.
Backup information will be available on both Mac and PC, but the machine must be equiped with DVD-ROM drive.
This is the ultimate backup solution, as most drives fitted in recent years are around 160GB.
This backup will work on any FireWire enabled Mac or PC.
On a PC you must be running XP operating system to access the drive.
