Synonyms
Flash disk drive; Solid state disk
Definition
Solid-state disk device that is made up of nonvolatile memory and is accessed using traditional SCSI disk protocols.
Main Text
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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Kasavajhala V. SSD vs HDD price and performance study. Dell Technical White Paper, 2011 May.
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Voruganti, K. (2018). Solid State Drive (SSD). In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_80698
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DOI: https://doi.org/10.1007/978-1-4614-8265-9_80698
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Publisher Name: Springer, New York, NY
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Online ISBN: 978-1-4614-8265-9
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