Types of Data Loss
- Intentional Action
- Intentional deletion of a file or program
- Unintentional Action
- Accidental deletion of a file or program
- Misplacement of CDs or Memory sticks
- Administration errors
- Inability to read unknown file format
- Failure
- Power failure, resulting in data in volatile memory not being saved to permanent memory.
- Hardware failure, such as a head crash in a hard disk.
- A software crash or freeze, resulting in data not being saved.
- Software bugs or poor usability, such as not confirming a file delete command.
- Business failure (vendor bankruptcy), where data is stored with a software vendor using Software-as-a-service and SaaS data escrow has not been provisioned.
- Data corruption, such as file system corruption or database corruption.
- Disaster
- Natural disaster, earthquake, flood, tornado, etc.
- Fire
- Crime
- Theft, hacking, sabotage, etc.
- A malicious act, such as a worm, virus, hacker or theft of physical media.
Studies have consistently shown hardware failure and human error to be two most common causes of data loss, accounting for roughly three quarters of all incidents. A commonly overlooked cause is a natural disaster. Although the probability is small, the only way to recover from data loss due to a natural disaster is to store backup data in a physically separate location.
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