Data Backup and Storage Options for Data Backup Plans

With information technology advancing almost daily, backup has remained not only integral, but also sensible for Internet and computer users. The term "backup" generally refers to data backup. The term data backup is usually defined as making copies of important data so that the computer user can conveniently retrieve this data in the event of data loss.

Any knowledgeable computer user will never be able to overstate the importance of data backup and then recovery. Long-term projects that have taken days, months, or even years can be lost due to data somehow being erased. Occasionally, such projects can be restarted, but it would another great investment of time, one a computer user might be able to afford. In some case, restarting might not be viable at all. Data backup prevents the absolute loss of data and then the time that would be spent in replacing it.

Typically, data backup is for two purposes. The first purpose of data backup can be simplified as a "disaster recovery plan." A disaster recovery plan is preparing for the worst (such as complete data loss) before it actually happens. The second involves the full backup and restoration of a small number of files after accidental or even intentional deletion or corruption.

A data backup and file recovery plan begins with data repository. The data needs to be stored and somehow organized. Therefore, to back up data, there exist different repository models.

Unstructured models contain minimal information about what was backed up and when. Full plus incremental models involve a full file backup and an incremental file backup of only the files that have been changed since that backup. Full plus differential is a full file backup followed by each partial backup capturing all files created or changed since the full data backup. A mirror plus reverse model offers a mirror reflecting systems state as of the last backup. Finally, a continuous data protection model has the system immediately logging all changes onto the host system.

Any data backup and storage strategy, no matter which data backup repository model used, must utilize data storage devices. Several data storage device options exist. For years, magnetic tape has been the most widely used medium for bulk data storage and backup. Hard disk data storage offers advantages such as low access times, availability, capacity and easy use. Optical discs, such as recordable CDs or DVDs, can be restored on any computer. The floppy disk is an ancient data storage device that has become obsolete due to low data storage capacity. Solid state data storage (flash memory, thumb drives, USB flash drives, and the like) offer excellent portability despite low capacity for data storage.

Recently, a new data backup solution has entered the market, which has been reported as being the optimal offsite data backup plan. This is online data storage and backup. With this favorable data backup plan of online backup, a computer user's data is saved no matter what happens to his or her computer and whatever data storage devices he has utilized to back up his data. Eventually, this type of online data backup will likely render all other data storage media obsolete as the floppy disk.

Online data backup and storage is not without its downfalls. An Internet connection can be much slower than the speed of local data storage devices, which can hamper those with large amounts of data needing to be backed up. Also, it can put the process of backing up sensitive or personal data in the hands of a third party. A solution to this problem is that encryption methods are now being employed to protect such data.