Abstract
The deletion of data from storage is an important component on data security. The deletion of entire disc or special files is well-known on hard drives, but this is quite different on SSDs, because they have a different architecture inside, and the main problem is if they serve the same methods like hard drives for data deletion or erasing. The built-in operations are used to do this on SSDs. The purpose of this review is to analyses some methods which are proposed to erase data form SSDs and their results too, to see which of them offers the best choice. In general we will see that the techniques of erasing data from entire disc from hard drives can be used also on SSDs, but there’s a problem with bugs. On the other hand, we cannot use the same techniques of erasing a file from hard drives and SSDs. To make this possible, there are required changes in FTL layer, which is responsible for mapping between logic addresses and physical addresses.
Highlights
Nowadays, corporations and agency’s store their data’s in digital media, managing them is becoming important
Data erasing is an important process and different techniques are include like built-in in ATA or SCSI commands
This techniques are effective on HDDs, where we can store the entire disc or specific files, but it’s not the same thing with SSDs, because SSDs and HDDs have a different technology and algorithms of managing the information
Summary
The deletion of entire disc or special files is well-known on hard drives, but this is quite different on SSDs, because they have a different architecture inside, and the main problem is if they serve the same methods like hard drives for data deletion or erasing. In general we will see that the techniques of erasing data from entire disc from hard drives can be used on SSDs, but there’s a problem with bugs. We cannot use the same techniques of erasing a file from hard drives and SSDs. On the other hand, we cannot use the same techniques of erasing a file from hard drives and SSDs To make this possible, there are required changes in FTL layer, which is responsible for mapping between logic addresses and physical addresses
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