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Causes of Data Loss (Diagram)
Data Recovery
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More about the causes of data loss
| Key |
Freq |
Cause |
Description |
| |
44% |
Hardware or System |
Physical failure of the drive; head crash; "disk slap" is when the read head makes physical contact with the drive platter; thermal failure or seizure caused by overheating; 'Drive Read Instability', which often occurs when a drive gets "old" and the drive heads may "loosen" beyond tolerances, thus measuring different values each time an attempt is made to read the drive |
| |
32% |
Human Error |
Inadvertent erasure or deletion of file;
accidental deletion or formatting of a drive or partition; dropping a hard drive |
| |
14% |
Software Corruption |
Software bugs; miscalculations; program crash
or operating system crash while writing data to a file |
| |
7% |
Computer Virus |
Intentional destruction of data due to
malicious malware, or unintentional destruction due to poorly-written malware |
| |
3% |
Natural Disaster |
Physical damage caused by fire, flood, earthquake,
and other acts of nature. Hurricane Katrina caused unprecedented data loss in a single event. |
Depending on the circumstances of each instance of data loss,
and also on resources available (tools, skills, time, and yes, dollars), data often can be recovered
under any of these scenarios. Of course, it is far more economical to prepare and test
a disaster recovery plan before it is needed.
Return to the Backup,
Data Recovery, Hard Drive Crashes page
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