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What Is e-MLC?
Multi-level cell flash, or MLC, is a commercial grade of flash memory used in a variety of different kinds of storage devices. This kind of flash is less reliable than single-level cell flash, or SLC flash, which is used in many kinds of industrial grade storage devices. Some developers choose MLC flash for industrial applications for a variety of reasons, including budgetary concerns and the need for enhanced capacities. However, for these developers, there is actually a middle ground between SLC and MLC flash that can offer better reliability than standard MLC without upgrading to SLC: e-MLC. Here is what you need to know about e-MLC and how it could work for your device.
e-MLC Basics+
Enterprise MLC, or e-MLC, is an enhanced version of the typical commercial MLC flash technology. It is designed to provide a solution to designers who need the reliability of SLC flash memory for industrial applications, but who also need MLC pricing and the advantages of the additional storage provided by MLC.
The storage capacity differences between SLC and MLC flash are caused by the number of bits of data stored on each cell. With SLC technology, one bit of data is stored per cell. This structure provides the best data security, reliability, and lifespan, but the number of cells that can fit into the device limits capacity. MLC flash allows two bits of data to be stored per cell. This reduces reliability, but increases capacity.
Increased Write Cycles with e-MLC
Commercial MLC has a much more limited number of write cycles than SLC, which makes it incompatible with many industrial devices. e-MLC changes that. With e-MLC, 20,000 to 30,000 write cycles are possible. This long lifespan and ability to handle more demanding workloads make e-MLC a much more viable option for use in industrial applications. When choosing e-MLC for an industrial device, be sure to select a memory card that is capable of tolerating industrial operating conditions, such as extreme temperatures and high levels of shock and vibration.
If you’re looking for a storage solution for your write-intensive industrial application, e-MLC could be the answer. At Delkin, our customer applications team is available to address your concerns and help you select the right embedded storage for your needs.
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