Remote Backup
This page contains material that will help you with LPI Certification objective 2.211.3.
The traditional way to backup computer systems is to copy files to a local storage device with removable media so the backups could be moved off site in case of disaster. Most often, the media was tape even though many of us have cursed tape at one time or another. This traditional way of doing backups is still being used by many and tape technology has improved. However, the larger capacity and more reliable tape backup products are expensive.
Less than 10 years ago, the cost of hard disk storage became less than tape storage, so people began to backup to hard disks. To keep these backups off site, the hard disks were mounted in removable "caddies". Then, in the past few years, the cost of Internet bandwidth was reduced to the point where data could be moved off site without moving physical media.
Many of us are now backing up our data by copying it over the Internet to another (presumably secure) site. If we want to keep our data secure as it moves over the Internet, we use encryption. In the Linux world, most of us use either the SSH secure copy command (called scp) or we establish a Virtual Private Network or VPN between our main and backup sites.
This page is under construction.