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4. Grandfather-Father-Son - A Case Study
The grandfather-father-son schedule is
most widely used method, and involves backing up data in
following way:
* daily - on
"son tapes" * weekly - on
"father tapes" * monthly – on
"grandfather tapes"
This system is far more powerful than
five-tape rotation, but requires more tapes.
This strategy provides you with
ability to restore data from
last week, plus any Monday over
last month, plus any month for as many monthly tapes as you have. Variations on this scheme are available, and provide a trade-off between
number of tapes required, and
number of monthly tapes available.
5. Different types of backup
Different types of backups are available in backup software.
* Full - all files, system data * Differential - all files added or changed since
last full backup * Incremental - all files added or changed since
last full, differential or incremental backup * Daily - all files added or changed on
day of
backup
A Full backup will copy all files and system data to
backup media. It allows for
complete restore of all data from one single tape.
Differential, Incremental and Daily are partial backups are designed to reduce amount of data backed-up to
media, resulting in faster backups. To restore data using one of these backups,
last Full backup tape will also be required, along with any other partial backups since
last Full backup.
6. Tape backup software
At this point you may be thinking that performing tape backup is a complex task. Tape rotations, incremental backups... sure, you can try to do this manually, but this would make
backup process hideously difficult and prone to human error! The solution is to invest in a good piece of server backup software that will manage and schedule your tape backups for you.
What should you look for in tape backup software? For many small business owners,
price is crucial. Many brands of backup software are just too expensive - in
$1000+ range - and contain features that you'll never need. Look for a backup utility that's designed specially for small business instead. It should be simple-to-use, reliable and affordable. Choose a good tape backup program and you'll be well on your way to safeguarding your files and data.

Linus Chang is a backup expert and the lead developer of BackupAssist - tape backup software that is simple and affordable, and perfect for small and medium businesses. Protect your Windows servers, including SQL Server and Exchange Server, to tape, REV drive, hard drive, NAS and more, at a fraction of the cost of other backup programs. For more information, visit http://www.backupassist.com.