What Is NAND Flash Memory?
NAND flash memory is the data storage format that is often found in solid state drives (SSDs), embedded memory cards, and USB devices. It is a non-volatile form of storage, which means that it retains its data even without power. This feature makes it particularly appealing to industrial users, who need a form of data storage that is reliable enough to protect data even when power failures occur. The non-volatile nature of NAND flash memory also reduces the overall power consumption of the device, so that it doesn’t overload sockets or cause other functional issues. Because of these advantages, NAND flash memory can be found in everything from USB flash drives and digital cameras to industrial applications.
NAND Flash Memory Lifespan
NAND flash memory can only perform a certain number of write cycles before it begins to fail. The number of write cycles depends on a large number of different factors, including the host device and the type of NAND flash memory. NAND flash devices have gradual failures and internal SMART systems that alert users to potential problems, which makes it easy for OEMs and engineers to predict when a failure will occur and prevent issues from happening in the field. NAND lifespan is also enhanced by wear leveling technology that helps to ensure that the storage blocks are being used efficiently to prevent premature failures.
SLC vs. MLC NAND Flash
There are multiple kinds of NAND flash memory, but SLC and MLC flash are the most common. SLC, or single-level cell, flash is often found in industrial grade devices. With this kind of flash, one bit of data is stored per cell, which helps to ensure the fastest possible speeds and highest level of data protection. MLC, or multi-level cell, flash is most frequently found in commercial grade devices. Two bits of data are stored on each cell in MLC flash technology, which slightly reduces speed and data protection capabilities.
If you are in the market for industrial grade embedded storage solutions that are optimized for rugged conditions, contact Delkin to learn more about NAND flash memory and our storage products. Our customer team is ready to assist you.