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Understanding backup types

A backup is insurance against loss or device failure. With a good backup, you can rebuild your system so it is just like you had it at some point in time. There are number of different types of backup that serve different needs.

The device backup is one that doesn’t understand the data on a storage device. It just understands the device and how data is stored on it. These are sometimes called image backups. They store and image of the data on the device. Where these are particularly useful is for making copies of a new device before you do anything to it, like a new computer with a system on its hard drive, or for a system you customize and want to copy on like hardware.

The system backup is used to be able to restore critical system files and settings. Since systems may make the computer unusable, these backups often have their own limited system so they can be booted separately from the normal system. That allows them to repair or replace the normal system to bring it back to a known good state.

The data backup copies the files on your computer that don’t involve system settings and are usually created by the applications you run. These are your documents, pictures, and other data that are important to you but not needed to make the computer function properly.

Every backup needs a device that can store the backup copy. This ranges from the side by side copy that many applications make when they modify a file to a file on a permanent media like a CD-ROM that is stored off site in a safe and secure place. There are a number of companies that also provide their backup media that is available over the I’net so you can use the web to backup your data.

There are variations and options and flavors of these three basic types of backup. Some device backups do know about the data on the device so they can compress it to make smaller backup sets. Later versions of Windows have restore points that texas holdem poker online gratispoker bonus ohne einzahlenpoker kostenlospoker sign up bonuspoker game setpoker real money bonuspoker texas online gamebwin pokeronline poker without downloadlimit texas holdempsp poker spielonline poker kostenfreinetzwerk poker spielpoker strategy netpoker online spielen ohne geldpoker spielen ohne anmeldungempirepoker bonusparty poker deposit bonus codepoker game sharewarestrip poker pc spieltexas holdem kostenlos downloadentexas holdem online spielenpoker gratis downloadspoker strategienpoker 10 bonuspoker game freewarewww party pokervc poker bonus codetexas poker netgratis online poker,gratis online poker ohne anmeldung,gratis online poker gamesomaha poker online spieleonline poker usapoker turnierepoker regeln full houseparty poker casinopoker gratis deutschpoker spiel geldpoker online spielen texas holdplay omaha poker onlineholdem poker online spielenparadise poker bonuspoker spielen im internetonline poker browserpoker texas holdem downloadenpoker downloadenonline poker flashtexas holdem poker online spielenonline games poker texasregistrierungs bonus code party pokerpoker sets allow undoing system changes. The Mac has its TimeVault which is a periodically updated snapshot of selected data, similar to using rsync on a Linux system.

In an Ubuntu Linux environment, PartImage anc Clonezilla are useful for device backup. For system backup, remastersys will allow you to create a bootable DVD to restore your system. Data backup with periodic snapshots is well handled by rsync with a shell script. Foogazi describes 5 possible options for backup, too.