What Is a Backup?
A backup is a copy of your data that is made to protect against loss of that data. A backup of a desktop or mobile device might include just the user data so that a previous version of a file can be recovered if necessary. In a virtual server environment, a backup could include. VMDK files (Virtual Machine Disk). It’s an open file format provided by VMware, mostly used for services for cloud computing and virtualization. Basically, VMDK files are virtual disk files containing all the info of a virtual machine). That contain data and the OS as well as both structured (database) and unstructured data (files) so that the system can be put back into service as quickly as possible if something happens to the original VM in a Vmware, Hyper-V, or other virtual machine environment. A user might go to a backup to retrieve an earlier version of a file because it contains something no longer in the current file, or as is possible with some backup services to share a file with a colleague or other person.
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