Comparison of data deletion methods
Do you know the individual data destruction methods? Do you know what is the difference between disk demagnetization (disk degauusing) and information destruction with software? Can you degauss flash media? Learn about the different methods of erasing data from storage media.
DEMAGNETIZATION OF DATA CARRIERS
Demagnetization is an effective method of data removal from magnetic data carriers. To carry out it, it is necessary to use a special device, which is a degausser. It creates a strong magnetic field that disrupts the setting of the magnetic domains of the carrier: it destroys, for example, servo information and calibration information. The larger the capacity of a disk, the stronger the magnetic field is needed to erase the information it contains.
See our degaussers
PHYSICAL DESTRUCTION OF DATA
Another method of erasing data is to physically destroy the storage media. There are many shredders and destroyers on the market that physically damage the media by punching, crushing or shredding them.
See our shredders / destroyers
DELETION OF DATA BY USING SOFTWARE
This method consists in repeatedly overwriting data on the carrier, which makes it difficult to recover. But the software overwrites the data, so there is a chance that some of it will be still recoverable.
Compare basic data removal methods
Basic data destruction methods comparison
|Demagnetization / degaussing process||Physical destruction with a professional shredder / destroyer||Software|
|Possibility of data recovery||No||Yes||Yes|
|Supported media||Magnetic media:|
HDD, tapes, floppy disks, etc.
|All||All (the carrier must be functional)|
|Unsupported media||Based on Flash-NAND memory: SSD, SD, CF etc.||–||–|
|Handling damaged media||Yes||Yes||No|
|Complexity of the process||Easy||Easy||Difficult|
|Time-consuming process||Up to 30 seconds / carrier||10-80 seconds / carrier||From several minutes to several hours for the carrier|
(depending on the method chosen)