Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Solid State Drive (SSD)

  • Kaladhar Voruganti
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80698

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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Recommended Reading

  1. 1.
    Kasavajhala V. SSD vs HDD price and performance study. Dell Technical White Paper, 2011 May.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Advanced Development GroupNetwork ApplianceSunnyvaleUSA

Section editors and affiliations

  • Kaladhar Voruganti
    • 1
  1. 1.Advanced Development GroupNetwork ApplianceSunnyvaleUSA