2D Legacy Flash Storage Moving to 3D Memory
In the world of NAND flash, there is an ever-present motivation to fit more flash memory capacity into a smaller space. Until now, flash memory manufacturers have done this by engineering NAND flash cells to be smaller and smaller and by offering memory options in which multiple bits of data are stored on each cell. However, these solutions were limited by the confines of 2D design. All of the cells were lined up next to each other in a string of blocks, but there was only one level of cells. This ultimately limited the capacity that could be offered. However, technology is changing, and 3D flash memory is becoming more common. Should you consider transitioning from 2D legacy flash storage to 3D memory? Here is what you need to know.
3D Memory Basics
3D NAND flash memory is a new evolution in memory that solves some of the problems with capacity. With this kind of storage, NAND flash memory cells are stacked on each other vertically. By stacking cells vertically, it is possible to dramatically increase the storage capacity without changing the size of the memory card. This is a crucial feature, because flash memory is often used in devices that are very small, and they are becoming increasingly smaller. A 3D NAND flash memory card can provide extended capacities without running into sizing issues.
3D flash memory is available in SLC, MLC, and TLC formats, just like 2D, planar storage. As with 2D storage, 3D SLC NAND flash stores one bit of data per cell. MLC stores two bits of data on each cell, and TLC stores three or more bits of data per cell. SLC offers the best reliability, while TLC offers the highest capacity potential.
Benefits of Moving to 3D Flash Storage
If you have 2D legacy storage, the obvious benefit of transitioning to 3D flash is that you can get increased capacity without compromising the grade of storage you want. This can be particularly important for engineers who are working on industrial applications that need SLC reliability, but also need more storage than 2D planar flash memory can offer.
Another benefit of 3D flash storage is that it has a longer lifespan than 2D planar flash. At all levels, 3D flash has been shown to last dramatically longer than the same grade of 2D storage.
If you’re considering moving to 3D memory from 2D legacy flash storage, Delkin is here to help. Contact us today to discuss your needs for rugged, embedded storage and to find out more about all of our products.
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