Intego Intego Backup Assistant, Руководство пользователя

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Intego Backup Assistant and Intego Backup Manager Pro User's Manual Page 13
Instead, we recommend you make backups to another device, such as a CD, DVD, iPod, or external
hard drive. (Note that external hard drives that connect to your Mac by USB or FireWire are
relatively inexpensive.)
If you have a MobileMe subscription, you can use Intego Backup Manager Pro to back up
selected folders to your iDisk. To save space (and copying time over a network), Intego Backup
Manager Pro can make incremental backups that replace only those files that have changed or been
created since the last backup.
We recommend you take the total size of your source files and budget at least twice as much space
on your destination disk. Many people make the mistake of backing up (for example) a 100 GB
hard drive to a 120 GB external disk—and then run out of space the third or fourth time they
perform an incremental backup, as more than 20 gigabytes of files had changed since the first
backup.
When you use removable media (such as CDs or DVDs), Intego Backup Manager Pro will
let your backups span multiple discs, asking you to insert a new disc as each one fills up. In this
way you have a (theoretically) infinitely big destination: all you need is more discs! However, such
media can become inconvenient for very large backups, such as those of your entire Mac, as you’d
have to attend to the backup and switch out disks every few minutes.
Your backup schedule depends on how often you change the original files. Ask yourself: how long
will it take to recreate changes made to lost files? For example, let’s say you start working
intensively on a file at 9 am. If you lose it due to a crash or power outage at noon, you’ll probably
need three hours to restore the file—if that’s even possible.
To ensure that you don’t lose such data, you should regularly back up your files. For critical data, a
backup of working files to external media (or a network location) every few hours is wise. Then,
complete daily or weekly backups provide additional protection to cover all files, whether you have
worked on them or not.