Data problems can be avoided

Logical problems occur when the file system has been compromised. Physically intact however data cannot be accessed, become corrupted, or have simply disappeared. Logical problems can be due to deletion, malware/spyware, overwrite, or formatted in error. Logical problems usually require human intervention to be both initiated and solved.

Physical problems are just that, hardware failure. Despite being more commonplace overall the number of naturally occurring hard drive failures is relatively small. There are a number of parts within a drive that can fail. Motor, read/write heads, printed circuit board, firmware chips, even bad sectors developing from regular usage. Many often blame manufacturing defects however most problems tend to rear their ugly heads due to improper use or maintenance. No moving parts are meant to run forever, let alone at 7,200 RPM for several years.

When dealing with important data the best method is preventative. Make regular backups and store those in a different location. Limit write permissions to those who need access. Turn off hardware that is not in use. Ensure that proper heat dissipation is occurring. Swap out old hardware every 3-5 years (budget permitting). Protect your network with a firewall and updated anti virus programs. Educate users on data management. All of these can help you avoid a data disaster.