Leading Causes of Data Loss
Hardware or System Malfunctions
(44 percent of all data loss)
Possible Symptoms
Error message statingthe device
is not recognized
Previously accessible data
suddenly gone
Scraping or rattling sound
Hard drive not spinning
Computer hard drive doesn't function
Examples
Electrical failure
Head/media crash
Controller failure
Preventive Measures
Protect electrical components by using computers in a dry, shaded, dust-free area
Protect against power surges with an uninterruptible power supply (UPS)
Do not shake or remove the covers on hard drives or tapes.
Human Error (32 percent of all data loss)
(also includes intentional deletion of data)
Possible Symptoms
Previously accessible data suddenly gone
Message similar to "File Not Found"
Examples
Disgruntled staff delete data intentionally
Accidental deletion or drive format
Trauma caused by drop or fall
Preventive Measures
Never attempt any operation, like installations or repairs, with which you don't have experience
Avoid moving your computer, especially when it's in operation
Software Corruption
(14 percent of all data loss)
Possible Symptoms
System messages relating to memory errors
Software application won't load
Error message stating data is corrupted or inaccessible
Examples
Corruption caused by diagnostic or repair tools
Failed backups
Configuration complexity
Preventive Measures
Back up data regularly
Use diagnostic utilities with caution
Computer Viruses
(7 percent of all data loss)
Possible Symptoms
Blank screen
Slow boot
Unfinishged boot
Antivirus warning
Strange and unpredictable behavior
Error message stating
"File Not Found" Message announcing virus appears on screen
Drive is corrupt or inaccessable message
Examples
Boot sector viruses
File infecting viruses
Polymorphic viruses
Preventive Measures
Use a good anti-virus package
Obtain software from reputable sources
Scan all incoming data, including packaged software, for viruses
Avoid ' dirty' sites where spyware and virus multiply
Adult, Free music, movie downloads, P2P networks
Natural Disasters
(3 percent of all data loss)
Possible Symptoms
Floods and earthquakes ca cause tremendous damage, brownouts and lightning strikes often leave no clues
Examples
Fires
Floods
Preventive Measures
Store tested backups in an off-site location
Install a UPS
Don't store critical data in a flood plain