Solid State Drive (SSD)
Flash disk drive; Solid state disk
Solid-state disk device that is made up of nonvolatile memory and is accessed using traditional SCSI disk protocols.
Regular hard disk drives (HDD) have both a computer complex (CPU, memory) and also mechanical components like arms and platters, whereas a SSD is a solid state drive with no mechanical components. SSDs also contain a computer complex. SSDs can be made up of different types of nonvolatile memories like flash, phase change memory (PCM), spin-torque memory (STT-MRAM), and nano-RAM (NRAM). Furthermore, there are many variants of flash such as single cell flash (SLC) or multiple cell flash (MLC) or 3-D NAND flash. Since SSDs do not have any mechanical arms to move, SSDs provide better random read/write performance than HDDs. The different types of SSDs provide different performance, density (impacts capacity), power usage, and endurance trade-offs. Different SSD vendors are advocating different types of...
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