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Architecture of SSD<\/strong>–<\/p>\n All components of SSD are soldered on PCB and components that are included in SSD are controller, memory, filter capacitor, temp sensor and DDR memory for data caching is often used. Temp sensors are used for managing power.<\/p>\n Memory<\/strong>–<\/p>\n We have generally heard about two type of memory which are RAM and ROM. But the third category that exists is Non-volatile memory and this type of memory is used in SSD. The advantage of this memory is that its content can be electrically altered and as discussed earlier they are not lost when the power supply is switched off. SSDs can also have volatile memory called as DRAM and its advantage is that it can have very fast data access.<\/p>\n Memory controller<\/strong>–<\/p>\n Memory controller performs the following tasks-<\/p>\n 1) It efficiently handles data,<\/p>\n 2) Retention of data,<\/p>\n 3)\u00a0 Data integrity and<\/p>\n 4) Maximizes the transfer speed.<\/p>\n Memory controller consist of four parts and they are-<\/p>\n 1) Host interface<\/strong><\/em>– It maintains logical and electrical interoperability between Host and SSDs. It consists of buffers and drivers and also handles data flow to and from flash memory.<\/p>\n 2) Flash File System<\/strong><\/em> (FFS)- It has three main functions and they are garbage collection, bad block management and wear leveling.<\/p>\n 3) Error Correction Code<\/strong><\/em> (ECC)- ECC is executed by specific hardware inside the memory controller. There are two error correction code which can correct more than one error at a time and they are Reed-Solomon and BCH error correction code.<\/p>\n