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June 2012

VMware data protection: An overview of how it works

If you are set to embark on review of VMware data protection options, there are a couple of areas you need to consider before approaching management with new plans. Primarily, you have to recognise server virtualisation fundamentally challenges the old ways of protecting data.  As you probably know, virtual machines (VMs) are encapsulated into a series of discrete files called “virtual disks.” These are presented to the operating system within the VM as if they were physical, but they are in fact files that reside in the virtualisation vendor’s chosen file system. As they are just files, they can be copied around the network in archive format, which introduces a whole new way of backing up without the need for in-guest backup agents. This can be extremely advantageous because most legacy backup vendors that historically backed up physical servers charge on a per-agent licensing system. In addition, virtualisation has had a big positive influence on other data protection schemes, such as replication and snapshots. Backup It is ...

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