3-2-1 backups

Here we will tell what the 3-2-1 backup system or method consists of and why it is so safe. And, of course, a key element is the cloud.

How the 3-2-1 backup system works

The 3-2-1 system refers to a highly secure redundant backup system in case one of the systems fails, and you don’t want to lose a single day of work.

For example, if ransomware infects company computers, it is likely that the backup will be infected as well, due to how advanced current ransomware malware systems are.

Likewise, the cloud service is not infallible and may also have a failure or be unavailable at certain times, and the backup may not be performed.

The scheme is actually simple. What you need to do is the following:

  • 3 backups in total
  • 2 different supports where we have these backups
  • 1 external or offline backup, physically away from the location

three backups in total - two of them locally

Those two local backups of the 3-2-1 system would be with two different supports, for greater security.

One of the media could be on a central NAS server. That backup would be the one we would have available all the time, and therefore the most vulnerable.

The second backup would be DAS, on an external device or hard drive, which, except for making the backup or recovering data, would always remain disconnected from the rest of the local computer network. That would give you a very high degree of security.

And the third backup, in the cloud

In an extreme case where both local backups have failed, the alternative would be outside the company, which would be in the cloud.

It is considered extremely unlikely that all three systems will fail at the same time, so anyone using this system will be very safe.

3-2-1 backups
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