Home > Cause for Data Loss

Data loss happens for a number of reasons. If backups are not done correctly simple failures can leave you without any data, or with the wrong data. Backup files may not recognize the database engine, Database locked as preventing access, Deleted or dropped tables, Accidentally deleted records, Data deleted with criminal or malicious intent, Corrupted database files, Damaged individual data pages, Accidentally overwritten database files and devices, Flood, Fire or Earthquake remember that at some point everyone who works on a computer will experience data loss.

A data loss situation is characterized by the sudden inability to access data involving a previously functioning computer system or backup or the accidental erasure of data or overwriting of data structures. To prevent data loss, a routine data backup that creates a second copy of important data for storage in a different physical location must be established.

A data backup will not insure 100% recovery of data; however a data backup will offer the ability to recover some portion of the lost data with relative ease. The freshness of the recovered data will depend on the frequency of the data backup. The frequency of data backup is dictated in some instances by law, in some instances by corporate policy and in others, by good user practice. Data backup methodologies like real-time data replication can be quite costly but offer the greatest protection against data loss.

Some data loss is caused by simple things such as loose wires. Carefully document what happened just before the data loss, software installation, sudden power loss, component installation, system upgrade etc. If you make changes to the media in an effort to recover data it could easily make the situation worse. If the information is important, it's a good idea to work from a bit-for-bit copy of the media rather from the original media. The smallest spec of dust could render the drive useless. Hard disk drives should be opened for repair only in a dust free class 100 or better clean room environment. If you have a disk that is making scraping, grinding or clicking noises turn off the computer immediately and leave it off. Data recovery is the act of data stored on damaged media, such as magnetic disks and tapes.

There are a number of companies and data recovery software products that can help recover data damaged by a disk crash or computer virus. The ability to recover data is a problem when equipment used to store sensitive data is to be discarded. Data recovery cases can be divided up into two main categories: Common Recoveries involves floppies and hard drives that are usually from single-user personal computers and file servers.

Complex Recoveries involves hard drives, RAID recovery, tape and optical media or corrupted databases and file systems usually from multi-user, business systems. Data storage at the high end has become a very complex field. The general causes faced now a days for data loss is due to viruses, voltage fluctuations and other reason for the hard disk failure is that the disk might go old.

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