Network attached storage (NAS) − They are generally devices that are used in small businesses for backup purposes because they offer a centralized manner of backup. Their capacities lately have increased a lot, they vary from 2 GB to 2 TB.
Removable Devices − They are again for home usage (data, documents, music, photos, movies) which can be a Removable USB or external hard disks. For a personal computer, they are −ĬD and DVD, Blue-Rays − They are used for home/personal usage where people can store their documents, mainly personal or office related documents because they have small capacities varying from 750MB to 50GB. In this section we will see the backup devices from smaller to enterprise solutions. It is suggested that in bigger companies which have a large volume of data, it is necessary to have a backup administrator, which is one of the most trusted persons in the company because he has access to all the data of that organization and generally deals with the backup routine check and the health of the backup. How is this Process Managed at Big Companies? This is a scenario that happens often in companies which have applications and databases and they want to test their applications with a specific version of data. An example is Ransomware, which encrypts all your data when your computer gets infected and the second is to roll back the data at a specific time you want. The main purpose is to recover the lost data from an unpredictable event like deletion by mistake or file corruption which in many cases is caused by a virus. In this Chapter, we will discuss backups which is a process of saving data that can be over a network or a computer.
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