Data Recovery: Logical & Physical Recovery
Even if you have never experienced data loss, one should still take precautions so that data on our Personal Computer hard drive, Server hard drive or RAID array drives remain intact. In order to achieve that, we need to have a fool proof backup plan in mind to help us in case of any disaster recovery. To handle data loss and recover our valuable data we need to have patience, resources and off course time. Some common symptoms of data loss are:
Ø Error messages stating that your hard drive is not recognized by BIOS
Ø Previously accessible important data and information is now invisible
Ø Rattling or scrapping sounds coming from your hard drive
Ø Computer won’t boot and faces logical crash
Ø Hard drive won’t spin that is physical crash
Ø We can not see or access hard drive partitions/volumes
In most of the situations, data loss occurs due to hard drive failure. Hard drive rotates at extremely high speed and it may cause physical malfunction. Sometimes corrupted MBR and file system could also be the reason.
Depending upon the cause of data loss, there are two forms of data recovery:
Ø Logical data recovery
Ø Physical data recovery
Logical data recovery is the method of placing the corrupted file system back so that data and files could be accessed again. Each operating system contains a file system that is the basis for indexing, organizing and accessing data. In case of file system corruption, it becomes impossible for operating system to locate files and access them.
