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The Retrieval Of Corrupt Data

Author : Jessica Moorhill

Data Recovery The process of retrieving back the data from the corrupted or damaged secondary storage media in the inaccessible state is known as Data Recovery. The inaccessibility of data is actually caused by two reasons: one the physical damage, which is the damage caused to the physical storage devices like CDs, RAID and hard disk drives and the other the Logical damage, which is nothing but the corruption of the file system. There are three main scenarios of Data Recovery namely the Operating System failure,

Disk-level failure and the deletion of files from a storage medium. In the case of OS failure, one can easily copy all the required files to an other disk with the help of a live CD. Whereas the process of reading the lost data in the case of Disk-level failure is not a simple job. It includes the techniques of repairing the file system, recovering the hard disk and partitioning the table. In the final case, the files that are deleted from a storage medium will not be lost or erased permanently. Rather only their references to the directory will be affected and so they can be easily restored. Many softwares that are available for Data Recovery easily facilitates the process of salvaging the data that are lost due to virus or disk crash. This is mainly carried out with the help of periodical data backups. Unfortunately, backups will contain only the data that are collected during the most recent backup session and hence the entire data can never be recovered as most of the current data will be potentially lost during the damage. Only a part of data, preferably a higher percentage can be got back in spite of the backup attempts. There is an other method of salvaging the lost data, which is nothing but the Online Data Recovery. It is also known as Remote Data Recovery. In this case the recovery will be carried out with the help of Internet without the assistance of any physical drive or device. Thus Online Data Recovery does not require the user to move the media physically.

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Tags:   data recovery, r?cup?ration de donn?es

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Submitted : 2011-04-29    Word Count : 870    Times Viewed: 477