Backing up and restoring the system
Disasters can occur at any time. Risk is everywhere. In this respect, backing up your system is of utmost importance and needs to be done regularly. It is always better to practice good prevention than to recover from data loss and learn this the hard way.
Backup and recovery need to be done based on a well-thought-out strategy and need to take the RTO and RPO factors into consideration. The RTO should answer basic questions such as how fast to recover lost data and how this will affect the business operations, while the RPO should answer questions such as how much of your data you can afford to lose.
There are different types and methods of backup. The following are some examples:
Figure 10.1 – Backup methods and types
When doing a backup, keep the following rules in mind:
- The 321 rule means that you should always have at least three copies of your data, with two copies on two different media at...
