Backups

Tarsnap Mastery: Online Backups for the Truly Paranoid (IT Mastery) It is always a good idea to keep backups of all of your data in multiple places. Every Linux or Unix sysadmin needs to master the art of backups if they want to keep their data forever.

Most seasoned sysadmins recommend and follow the 3-2-1 rule:

  1. At least three copies of data
  2. In two different formats
  3. With one of those copies off-site

What is a Tarsnap service?

A Tarsnap service is a secure online backup system for Linux, OSX, *BSD or UNIX-like system. They encrypt and store data in Amazon S3. The services also use rsync-like algorithms, and only backup data that has been changed since the last dump. The backups are protected by a security key only known to a backup operator or sysadmin.

Tarsnap Mastery book

To use Tarsnap perfectly and feel secure about your backups, I recommend the “Tarsnap Mastery” book by Michael W. Lucas. It is no secret that I’m a big fan of his book series and this book didn’t disappoint.
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A good backup plan is essential in order to have the ability to recover from

  • Human errors
  • RAID or disk failure
  • File system corruption
  • Data center destruction and more.

In this post I’m going to list amazingly awesome open source Backup software for you.

What to look for when choosing backup software for an enterprise?

Make sure the following features are supported backup software you deploy:
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Cloning is nothing but the copying of the contents of a server hard disk to a storage medium (another disk) or to an image file. Disk cloning is quite useful in modern data centers for:

  1. Full system backup.
  2. System recovery.
  3. Reboot and restore.
  4. Hard drive upgrade.
  5. Converting a physical server to virtual machine and more.

In this post, I am going to list the Free and Open Source Cloning Software for Disk Imaging and Cloning that you can use for GNU/Linux, *BSD and Mac OS X desktop operating systems.
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Amazon web services (AWS) launched a new service called Amazon Glacier. You can use this service for archiving mission-critical data and backups in a reliable way in an enterprise IT or for personal usage. This service cost as low as $0.01 (one US penny, one one-hundredth of a dollar) per Gigabyte, per month. You can store a lot of data in various geographically distinct facilities and verifying hardware or data integrity, irrespective of the length of your retention periods. The first thing comes to mind is, the Glacier would be a good place for a backup off family photos and videos from my local 12TB nas.
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