Storage has always been one of the focuses of attention. Therefore, in response to your interests, the editor will bring you an introduction to EMC. Please refer to the following for more details.
1、 EMC
EMC-External Memory Controller. It is connected to the AHB bus and manages external storage such as RAM ROM Flash. If the CPU wants to read and write data from external storage, it can directly communicate with EMC through the AHB bus. The specific operation sequence should be consulted in the relevant data manual. Many microcontrollers or microprocessors integrate external memory controller modules to facilitate memory expansion, typically including memory configuration registers (Register Allocation), external memory interfaces (EMI), etc.
As a type of storage, EMC naturally follows the general principles of storage.
Memory is a collection of many storage units arranged in order of unit numbers. Each unit is composed of several binary bits to represent the numerical values stored in the storage unit. This structure is very similar to the structure of an array, so in VHDL language, an array is usually used to describe the storage.
Memory is a memory component used to store programs and various data information. Memory can be divided into two categories: main memory (referred to as main memory or internal memory) and auxiliary memory (referred to as auxiliary memory or external memory). The main memory directly exchanges information with the CPU.
The working mode of main memory is to store or read various types of information according to the address of the storage unit, collectively referred to as access memory. The carrier that collects storage units in main memory is called storage body. Each unit in the storage body can store information represented by a string of binary code. The total number of bits of this information is called the word length of a storage unit. The address of a storage unit corresponds one-to-one to the information stored in it. There is only one unit address, which is fixed and unchanging, while the information stored in it can be replaced.
The binary encoding indicating each unit is called an address code. When searching for a unit, you first need to provide its address code. The register that temporarily stores this address code is called the Memory Address Register (MAR). To store information retrieved from the main storage unit or prepared for storage in a certain storage unit, a memory data register (MDR) is also set.
2、 The Importance of EMC Storage
Through the above introduction, I believe everyone has a preliminary understanding of EMC external storage controllers. In this section, we will understand the importance of EMC external storage controllers.
The performance of domestic professional EMC storage meets the data in the specification table to ensure that the organization has sufficient time to verify product performance in all business requirement scenarios. What are the importance of EMC storage methods?
1. Full flash storage efficiency can be guaranteed
EMC storage guarantees are not limited to data deduplication or compression, but the commitment also depends on the end result. If good practices are followed, the effective capacity will reach several times the available capacity of the system. This guarantee reassures everyone when planning capacity and makes infrastructure costs more predictable. In addition, EMC storage provides an option to support effective capacity growth through end-to-end workload assessment. Understanding everyone’s application environment is crucial for comprehensively optimizing storage infrastructure.
2. Secure data migration
EMC storage products already have the ability to upgrade controllers and increase capacity without compromising data accessibility. This commitment aims to further fulfill the engineering level design commitment. EMC storage aims to achieve simple data migration between multiple generations of products, even including storage architecture conversion from design to hardware design. Few suppliers (if any) can accurately predict the future of storage hardware. EMC storage ensures that future generations of infrastructure can accept data from previous generations of products, thereby eliminating the risk of being constrained by storage architecture bottlenecks.
3. Good hardware investment protection measures
EMC storage hardware systems provide discount exchange services (including software and hyperfusion products), and even offer discount exchange services for certain competitive systems. EMC Storage Assurance can help customers reduce the cost of modernizing their data centers using new storage technologies. Considering the speed of storage innovation and the transformative advantages brought by technologies such as flash memory compared to previous generations of products, timely storage innovation is becoming increasingly important for maintaining competitiveness.
