Книга: Fedora™ Unleashed, 2008 edition
Tape Drive Backup
Tape Drive Backup
Tape drives have been used in the computer industry from the beginning. Tape drive storage has been so prevalent in the industry that the tar command (the most commonly used command for archiving) is derived from the words Tape ARchive. Modern tape drives use tape cartridges that can hold 70GB of data (or more in compressed format). Capacities and durability of tapes vary from type to type and range from a few gigabytes to hundreds of gigabytes with commensurate increases in cost for the equipment and media. Autoloading tape-drive systems can accommodate archives that exceed the capacity of the file systems.
TIP
Older tape equipment is often available in the used equipment market and might be useful for smaller operations that have outgrown more limited backup device options.
Tape equipment is well supported in Linux and, when properly maintained, is extremely reliable. The tapes themselves are inexpensive, given their storage capacity and their opportunity for reuse. Be aware, however, that tapes do deteriorate over time and, being mechanical, tape drives can and will fail.
CAUTION
Neglecting to clean, align, and maintain tape drives puts your data at risk. The tapes themselves are also susceptible to mechanical wear and degradation. Hardware maintenance is part of a good backup policy. Do not ever forget that it is a question of when — not if — hardware will fail.
Оглавление книги
- Choosing a Backup Strategy
- Choosing Backup Hardware and Media
- Common backup solutions
- JDBC Туре 4 DRIVER
- Test Driver Code
- gbak BackupRunner
- Partitioning Your Hard Drive
- Installing Proprietary Video Drivers
- Assessing Your Backup Needs and Resources
- Evaluating Backup Strategies
- Using Backup Software
- tar: The Most Basic Backup Tool