Data Recovery: The Significance Of Disk Imaging
Friday, December 19th, 2008Disk imaging basically means copying the entire contents of a data storage device or data storage medium and shifting it onto a similar device or medium. In other words, data imaging involves creating a duplicate copy of the hard disk drive including not just the data but also the programs, setup data and so on. This information is compressed and stored in a special file format.
The Purpose Of Disk Imaging
Disk imaging attempts to provide a quick and reliable duplicate of the data as well as the system of a computer. This proves extremely useful in the event of loss of data due to a disk crash. A disk crash could occur due to a virus attack or any other accident and in such a scenario; a replica of the crashed system is extremely useful for effective data recovery.
Disk imaging is also useful when a system set-up needs to be duplicated onto another computer for installation or when it has to be moved to another hard drive. As disk imaging creates back-ups of not just the data but also the configuration and system, it is extremely helpful in such a scenario.
Disk imaging software actually creates an entire ‘image’ of the computer system with its structure, software, registry programs and so on. Data recovery with this disk is easily facilitated as it can be used for smooth reinstallation of the system in the event of a crash. The otherwise complicated procedure of installing software and resetting the settings etc can be adroitly avoided with the help of disk imaging.
Disk imaging software is also beneficial for systems administrators in charge of several computers with similar configurations. Transferring data and system configuration information can be easily carried out by creating a replica of one computer system and installing it onto the other computers.
How Does Disk Imaging Help In Data Recovery
With disk imaging software, an exact replica or an exact ‘image’ of the disk at a particular point of time is taken. In case the data is lost from the system due to any catastrophe such as a virus attack, system failure and so on, data recovery is made extremely simple with the help of the disk image. The disk image makes a copy of the file systems and partition tables. Disk imaging also involves the creation of a Ghost Image where even the minor details regarding the operating system, the device drivers and the system settings are included in the disk image. Data recovery carried out with the ghost image thus helps in restoring the crashed disc to the exact system configuration and desktop as it was before.
How Can A Disk Image Be Created
Disk imaging is an essential tool for data recovery and in the event of system failure; it can be used many a time to recreate the entire storage device to what it was at the time of crash. It is thus a very popular method of data recovery.
Disk images are usually created with the help of specialized software. Such software is easily available on the Internet and can be downloaded. Software in the form of freeware and shareware is available on the Internet and in certain cases; limited edition trialware can also be downloaded. The disk image has to be stored on a separate media from the one that is being protected from loss of data. Disk imaging usually results in a large file consisting of several megabytes of data. Ideally the disk image should be stored on a removable storage media such as CDs or DVDs.
Data recovery from the disk image of the stored data is usually done with the help of the same software that was used to create the disk image. Clear cut instructions for data recovery are usually specified in the manuals of the disk imaging software. One of the most popular disk imaging software is the Norton Ghost created by the Symantec Corporation.