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The 3-2-1 Rule in Data Backup

Key Points:

As companies expand and start-ups take the plunge, they need to be extra careful in protecting their data.

Most data is sensitive and must be strictly guarded. Otherwise, loss of data can be a fatal mistake for a business, so IT has a very important job: data protection. However, regardless of the number of mechanisms you put in place and the number of precautionary steps you take, data protection is only as good as your best data backup strategy.

Thanks to technology, there are many ways in which you can get an effective onsite and off-site backup for all of your data, both on your premises and in the cloud.

The 3-2-1 Rule

One of the best practices followed in data protection and backup strategies is the 3-2-1 rule. With this rule, all businesses are advised to have 3 backups stored on at least 2 different kinds of media with 1 copy being stored off-site.


Have 3 backups stored on at least 2 different kinds of media onsite and 1 copy being stored off-site.


3 Prerequisites to an Effective Data Protection and Backup Strategy

There are three main prerequisites to having an effective data backup strategy.

1. Identify Sensitive Data

Not all data is equally sensitive. Some data is redundant so it's not really needed. Before you choose a data protection and backup strategy, the first thing to do is to identify the data that is crucial to running your business.

2. Prioritise and Segregate

Once you have identified which data is critical, it's time to sort it in order of priority. The data which is on top of the ladder has to get full attention. As you go down, the data will become less and less sensitive, but it will still need extra care.

3. Know Your Third-Parties 

There are many other people who have access to your data—maybe not to all of it, but some of it. Check out all of the third parties that have access to your data and review their security setup and backup measures. In the long run, this will make your work of data protection a lot easier.

Now that you know the rule and the prerequisites, it's time to choose the data protection and backup strategy that suits your business. Click Next to learn more.

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