The standard mechanical really hard disk information deletion may be recovered is no stranger. With

Solid State Drive (SSD) structure and traits

Solid state drive SSD is actually a sort of storage medium with 'NAND (NOTAND) flash memory' as the storage carrier. The data is processed by the NAND flash memory handle chip and stored within the flash memory chip. Compared using the classic mechanical tough disk, the INTOHARD challenging disk base network summarizes the following characteristics of SSD:

(1) No mechanical parts, excellent shock resistance (2) NAND flash memory as storage medium, theoretical storage life limit (three) Do away with mechanical head swing arm seek, continuous read and create speed and 4K random study and create speed far exceed mechanical really hard disk (four) Information processing and storage methods are unique from mechanical challenging disks, and data algorithms have exceptionally higher requirements on information recovery technologies

SSD information recovery classification

1. TRIM and SSD data recovery (logical layer recovery)

Users who use solid-state really hard drives will not be unfamiliar with 'TRIM'. This can be a set of directions for optimizing solid-state performance and life. In simple terms, TRIM is always to map the storage address information of data inside the challenging disk to a sand table. After the information is deleted, the challenging disk erases it inside the sandbox. When the information recovery software tries to recover this information, the sandbox returns the data: the information stored within this place has been 'released', and there is certainly only a single piece at this place. blank'. Hence, website tells you that TRIM is turned on, even if the user doesn't intentionally overwrite right after the data is deleted, it can't be restored.

(1) Turning on TRIM can significantly improve the operating speed with the solid state drive, and at the same time can decrease the amount of information written to extend the service life, but at the very same time means that the data is deleted permanently lost (2) Windows7, MacOS 10.7 and above versions Operating systems, all help TRIM instruction (three) MacOS ten.ten and above systems don't open TRIM by default for non-original solid state drives, users must manually open

two. Key control chip and solid-state hard disk data recovery (physical layer recovery)

In accordance with incomplete user statistics, 95% of solid-state challenging disk failures are triggered by damage to the NAND primary manage chip. The failure phenomenon is that the hard disk can't be recognized abruptly. The function from the major control chip is always to manage the storage technique of information on the SSD. data recovery software free download from the most important control chip algorithm determines the study and create efficiency and service life of the SSD. At present, the mainstream primary controllers are Sandforce, Marvell, Samsung, SMI, and so on. Since the main handle algorithm is really a magic weapon for the producers, the companies encrypt them and do not announce them.

The biggest disadvantage of SSDs compared to mechanical difficult drives may be the existence of a theoretical life limit. Taking mainstream MLC particles as an example, the write life of each flash memory particle is 3000 to 10000 times, that's, when the same particle reaches this limit, it will likely be permanently stopped. jobs. Consequently, in order to prolong the service life of SSD and balance the amount of writes of every particle, the strong state drive utilizes a storage approach that's entirely various from the mechanical difficult disk sequential storage mechanism-balanced storage, that is definitely, only following all the particles have already been written when, the next time. A round of replication will not be repeated constantly inside a certain position. In other words, a data is stored inside a mechanical difficult disk, which can be commonly stored continuously, and in SSD, it is most likely to be distributed to all corners of flash memory. That is fragmentation, this operate is performed by the main control chip, so once the key manage chip is broken, the structure in the information stored within the SSD is lost. Since the key manage chip is encrypted, if it can't be decrypted, the data can't be recovered.

three. Friendly reminder of solid state drive and data security

Because of the specific storage mechanism of SSDs, it is incredibly difficult to recover data no matter the logical layer or physical layer, and it is difficult to recover without a specific technical level. As a result, customers need to spend consideration to: (1) routinely back up significant data; (two) when the SSD prompts Smart error, the information really should be backed up as soon as you possibly can; (3) Mac users need to turn on TimeMachine to automatically perform information backup;

4. The final summary

INTOHARD challenging disk base network within this write-up tells you that the SSD really hard disk TRIM function makes it impossible to recover the deleted data as soon as it can be deleted. It's quite challenging for the solid-state difficult disk to damage the firmware or the NAND chip to recover the information. Yo.