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Semiconductor Memory Technologies Overview
Published in Shimeng Yu, Semiconductor Memory Devices and Circuits, 2022
There are other storage media beyond the technologies listed in this pyramid. For archiving purposes, magnetic tapes are still being used for the large volume “cold” data storage due to their ultra-low cost. Optical discs such as CDs, DVDs, or Blu-ray are also used for information distribution purposes. The magnetic tapes, optical discs, and HDD will not be covered in this book as they are not fabricated with the silicon-manufacturing processes. To summarize, the focus of this book will be placed on the semiconductor memory technologies such as SRAM, DRAM, NAND Flash, and emerging memories.
Wheel hub design of agricultural vehicles based on big data technology
Published in Production Planning & Control, 2022
Wangxi Li, Peiji Jiang, Zhangping Lu
The data block has a lifespan of L. the time difference between the current time and the data block's formation. The likelihood of a data block being accessed in the future generally decreases with increasing data block lifespan. Here, based on the access characteristics and regulations of a large number of data blocks, the access likelihood of the data block in the future is anticipated. Hot data is a chunk of data with a high chance of access. The data block with the lowest probability is cold data, and the data's hot and cold states are determined as a result. Hot data is information requires frequent access. It is frequently utilised by a corporation to make rapid decisions and is generally business-critical information that must be retrieved immediately. In hybrid or tiered storage setups, hot data is often stored on the quickest storage, which is frequently flash. Cold data is data that is infrequently viewed and so is termed “cold.” Data that isn't commonly accessible is considered cold data in contrast to hot data. Cold data can be kept on less powerful and less costly storage medium to reduce storage expenses.