In Windows Server 2012 version of WSB, Hyper-V is treated as an application that can backed up or restored. However, sometimes a more flexible method is needed. With this way, the administrator can do a bare metal recovery later. In the previous version of WSB, it is not possible to backup or restore an individual VM from a Hyper-V host, as VMs will be backed up or restored as part of a full server or volume backup on the host.
However, the most notable improvement is that now WSB fully supports Hyper-V backup and restore. Some of the improvements are smarter backup management system where the administrator can determine a policy to auto-delete old backups and free up storage usage, the ability to backup volumes with size greater than 2TB and sector size 4K, support backup cluster shared volumes, and better reporting system. Since Windows Server 2012, WSB has some improvements compared to the previous version. WSB is also very flexible in terms of restore as administrator is given the options to restore volumes, applications, system state, or files and folders from any backups that are stored either locally or remotely. It is a pretty simple tool with capabilities to backup, and restore all volumes, specific volumes, system state, or even just a specific files and folders within a machine.
Windows Server Backup (WSB) is a Windows Server native feature that can be activated easily through Server Manager.
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