Systems are partitioned for several reasons; to obtain a separate disk from a single disk, to be able to launch more than one operating system, to use storage resources efficiently and to boost data recovery process. Now that we know we can use partitions to save data, then here is why we need repartitioning. The primary target of repartitioning is to optimize partition arrangement and to be able to manage partitions well. If your system has insufficient or excessive numbers of partitions or large files partition, then for better management you need to merge, extend, shrink the partition or create new partitions.
System virtualization usually refers to one of two things; operating system virtualization which centres on software to create a virtual computer system and Operating System virtualization which is used to create instances of an operating environment. This involves virtual servers that enable a user to have access to the physical systems remotely. It also enables users to run several operating systems that are not physically installed. The virtual systems are similar to the physical systems hence, they can be partitioned and repartitioned as the user sees fit. This is very critical in disaster data recovery.
Virtualisation has played an important role in disaster data recovery. With the increase of man-made disasters and the natural disasters, organisations are likely to have their operation crippled just in-case they suffer from an attack, system failure or natural disaster. With the traditional tapes, it was possible to recover data in two days or more but virtualisation has simplified things more and you can now recover data in up to four hours or less.
Repartitioning of a virtual system for disaster data recovery it is possible as you can recreate real-life images of the physical machine and store them virtually. In case of loss of data, you just need to recreate information from the virtual machine into another system. This is cheaper than a physical backup but it is not a replacement.
It’s possible to create an image of the physical partition and then repartition it to create an ideal instance. Disaster recovery is cheaper and easier and more complete in a virtual environment. In case of backup faster recovery time objectives (RTOs) are easily achieved.
Virtualisation can easily backup application software, local data, memory and settings. Data is easily backed-up as an image of the physical machine. The Virtual Machine can be recreated in a compatible environment easily so there is no need for a physical rebuild.