With the widely promotion of 3D NAND Flash in the market, LDPC has became a key marketing advertisement by all flash vendors. From the point of ECC, there is indeed no more powerful error correction algorithm than LDPC. But on the contrary, there also exists disagreements. Although the LDPC has been used by HDD for years, it is still unverified by the market when used in NAND Flash. In theory, LDPC is also with own defects. 1. The latency time of LDPC is extremely long due to the process of iteration. 2. The Soft Information is necessary. It’s easy to get the Soft Information of HDD at once, but it’s difficult to get the accurate Soft Information of NAND Flash. Once you get the wrong information, the result could be disastrous. Because the LDPC need to calculate the probability with the Soft Information, if the decoder of LDPC gets the wrong Soft Information, it will lead the wrong inform...
If you want to look for a Nand Flash test equipment, Renice have 3 types of Nand Flash Tester for your option, NFA100-E, NFA100 and NFA1000. What can Nand Flash Testers do? How to select a suitable Nand Flash Tester? Let us show more information, you might find the answer here. Brief Introduction NAF100-E , is an extremely powerful and flexible NAND Flash testing platform specially developed for R&D personnel whereby they can extract NAND Flash parameters in a maximal way by using NFA100-E system commands and even reprocess these parameters for eventual product development. User can also realize their specific testing requirements through API or usage of script commands. NAF100 and NAF1000 , is able to test up to 112pcs/1120pcs of NAND Flash at the same time. Besides all functions that NFA100-E has, NFA100 is equipped with high-low temperature chamber so that users are able to make high-low temp. cycle test, humidity and thermal shock test.NFA100 is also ...
Self-encrypting drives use an encryption engine built into the SSD’s controller to encrypt every file stored on the drive. The purpose of AES Encryption is to convert standard input data known as plaintext to an unintelligible output known as cipher text. So if AES encryption on SSD used for data randomization function only, it only provides some data protection in the sense that if the controller is damaged, a 3rd party would not be able to read the data on the flash. In normal usage, however, there would be no data protection as any party that is in possession of the drive can read the data. Methods of using AES on SSD to Secure Data Hardware-based Encryption Self-encrypting drives include dedicated AES encryption engines that do not require software to run on the host. The randomized AES encryption keys are generated at product initialization using the controller’s true random number generator and encrypted in the SSD. This could also be implemented by a Trusted Platform Modu...
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