![]() We all know that in this virtualization era, administrators are given the option to do the backup at the virtualization layer rather than the traditional backup at the OS level. The importance of incremental backup for VMs ![]() And because of the smaller size, it gives less burden to the network. Incremental backup is also processed faster, as the size of the backup data is smaller. With this way, we can save disk space used to store the backup. Moreover, we already have the “X-Y-Z” part backed up previously, so we don’t need that part to be backed up again. Obviously, copying only the “W” part of the data will consume less disk space compared to copying the whole “W-X-Y-Z” data. But if we perform an incremental backup instead, it will only copy the “W” part of the data. If we then perform another full backup, it will copy the whole data “W-X-Y-Z”. Today, the data is modified so now we have four letters “W-X-Y-Z”. To help better understanding on how each type of backup works, see this example:įor example, a data contains three letters “X-Y-Z” was fully backed up yesterday. It works differently with the typical full backup, where the whole data parts were copied. ![]() Incremental backup is a type of backup that only copies part of the data that are changed since the successful backup. Of course, popular virtualization platforms like VMware vSphere or Microsoft Hyper-V has been made to support incremental backup. It is important to have an incremental backup on Virtual Machines (VMs) to ensure continuous backup while still maintaining efficiency in the process. A good backup strategy should include an incremental backup in its plan. It has to be done to ensure that the IT system can always be recovered from a failure or disaster condition, and also to ensure that users will not lose their important data and access to services. Backup has always been one of the must-have IT capabilities, especially in enterprise network. ![]()
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