The most typical cases of knowledge loss

The most typical cases of knowledge loss

The commonest causes of knowledge loss include:

•   Accidental deletion of files or folders

Each filing system acts differently when deleting a file. as an example, in Windows the FAT filing system marks file directory entries as “unused” and destroys file allocation information (except for the start of the file), in NTFS only the file entry is marked as “unused”, the record is deleted from the directory and therefore the disc space is additionally marked as “unused”; most Linux/Unix file systems destroy the file descriptor (information about the file location, file type, file size, etc.) and marks the disc space as “free”. The main purpose of file deletion is to release space for storing employed by the file for storing a replacement file. For performance reasons space for storing isn’t wiped immediately which makes the particular file contents remain on the disk until this space for storing is reused for saving a replacement file.

•   File system formatting

File system formatting are often started by mistake, for instance, as a results of specifying a wrong disk partition or on account of mishandling a storage (e.g. NAS devices usually format the interior storage after an effort to reconfigure RAID).The formatting procedure creates empty filing system structures on the storage and overwrites any information then. If the kinds of the new and therefore the former file systems coincide, it destroys the prevailing filing system structures by overwriting them with new ones; if the kinds of the file systems differ, the structures are written to different locations and should wipe user’s data.

•   Logical damage of a file system

This issue may occur thanks to blackouts or hardware failures. Sometimes, logical damages also are caused by software crashes. Modern filing systems have a high level of protection against file system logical damages, yet, they continue to be helpless against hardware or software malfunctions. Even a little piece of wrong data written to a wrong location on the storage can cause the destruction of filing system structures, breaking filing system object links and making the filing system non-readable.

•   Loss of data a few partition

This failure may occur due to a failed “fdisk” operation or user’s errors, which usually end in the loss of data about the situation and size of a partition.

•   Storage failure

If you think any physical issues with the storage (e.g. the device doesn’t boot, makes unusual noises, overheats, faces problems with reading data, etc.), it’s not recommended to perform any data recovery attempts on your own. You ought to take the storage to a specialized data recovery laboratory.

If a failure has occurred to a RAID system (failure of 1 drive in RAID 5, failure of maximum two drives in RAID 6, etc.), data recovery is feasible without the missing drive, because the redundancy of RAID allows restoring data without one storage.

Data recovery software helps to urge the lost data back with the utmost efficiency. Commonly, data recovery process is predicated on storage scan, which serves to seek out specific information (deleted files, lost filing systems) and assemble structures of the damaged file system. Other details depend mainly on the sort of the storage and may be found within the data recovery solutions section.The most typical cases of knowledge loss

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