SSD

(analytical chemistry) steady-state distribution

SSD

(Solid State Drive) An SSD is an all-electronic non-volatile storage device that is an alternative to, and is increasingly replacing, hard disks. Employed in myriad products, including mobile devices, iPods, cameras, laptops and desktop computers, SSDs are faster than hard disks because there is zero latency (no read/write head to move). They are also more rugged and reliable and offer greater protection in hostile environments. In addition, SSDs use less power and are not affected by magnets.

In time, there will only be solid state storage, and spinning disk platters will be as obsolete as the punch card (see future memory chips). See disk on module and garbage collection.

Mostly Flash Memory
SSDs are made of flash memory chips 99% of the time. However, for the absolute fastest storage speed obtainable, there are SSDs that use volatile RAM chips backed up by non-volatile storage in case of power failure (see nvSRAM and BBSRAM).

Hybrid Drive (SSD and Disk)
Hybrid drives, such as the Fusion Drive in Macs, combine an SSD with a hard disk (see solid state hybrid drive and Fusion Drive).

Hard Drive Replacement Kits

This Kingston kit includes everything necessary to replace a desktop computer's hard drive with an SSD. Laptop kits include an external case for holding the old drive while it is cloned to the SSD. (Image courtesy of Kingston Technology Corporation, www.kingston.com)

Less Costly Every Year

In 2014, 500GB at USD $349.99 was considerably less expensive than SSDs only a few years prior. However, by 2019, 500GB cost less than a hundred. (Images courtesy of Micro Center, www.microcenter.com)

Less Costly Every Year

In 2014, 500GB at USD $349.99 was considerably less expensive than SSDs only a few years prior. However, by 2019, 500GB cost less than a hundred. (Images courtesy of Micro Center, www.microcenter.com)

RAM-Based Storage

These earlier products used 4GB of RAM as solid state storage and had battery backup. The MegaRAM (top) also included a hard drive. In the case of power failure, the contents of RAM was quickly copied to the drive. The GIGABYTE i-RAM (bottom) plugged into the PC's motherboard. See nvSRAM and BBSRAM. (Image courtesy of Imperial Technology, Inc.)

RAM-Based Storage

These earlier products used 4GB of RAM as solid state storage and had battery backup. The MegaRAM (top) also included a hard drive. In the case of power failure, the contents of RAM was quickly copied to the drive. The GIGABYTE i-RAM (bottom) plugged into the PC's motherboard. See nvSRAM and BBSRAM. (Image courtesy of Imperial Technology, Inc.)

The First SSD

In 1977, this Dataram module tied eight magnetic core circuit boards together to make the first solid state disk. It held a whopping two megabytes. See core storage. (Image courtesy of Dataram Corporation, www.dataram.com)

Early SSD PC Cards

Minuscule in capacity by today's standards, these SanDisk FLASHDISKs added storage to early laptops. Shown here with a CompactFlash card (upper left) for size comparison, they plugged into a PCMCIA slot (see PC Card). (Image courtesy of SanDisk Corporation, www.sandisk.com)

SSD

Acronym	Definition
SSD➣Solid State Drive
SSD➣Solid State Disk
SSD➣Seaside (Amtrak station code; Seaside, OR)
SSD➣Social Security Disability
SSD➣Ship Self Defense
SSD➣Signed, Sealed, Delivered
SSD➣Services for Students with Disabilities
SSD➣Solid State Storage Device
SSD➣Spatial Databases
SSD➣Silver Sulfadiazine
SSD➣Social Services Department
SSD➣Secondary Storage Device (computer storage)
SSD➣Scalextric Sport Digital (slot cars)
SSD➣Single Sided Deafness
SSD➣Structured Self-Development (US Army)
SSD➣School Safety Division (various locations)
SSD➣Space Systems Division
SSD➣Satellite Services Division (NOAA)
SSD➣Seven Segment Display
SSD➣Solar System Dynamics (NASA group)
SSD➣Security Systems Division (various organizations)
SSD➣Social Sciences Division
SSD➣Specialized Search Dog
SSD➣Special Service District (various locations)
SSD➣Special School District
SSD➣Soul Sacrifice Delta (gaming)
SSD➣Simpson Manufacturing Company (stock symbol)
SSD➣Shared Secret Data
SSD➣Shaded Surface Display
SSD➣Smaf Sound Decorator
SSD➣Sensor Stream Database
SSD➣Single Server Disaggregation
SSD➣System Shutdown
SSD➣Service Selection Dashboard
SSD➣Supplementary Service Data
SSD➣Storage Systems Division
SSD➣Super Speed Draft
SSD➣Secondary Send Data
SSD➣Start of Stream Delimiter
SSD➣Single Sided Disk
SSD➣Saturated Surface Dry (construction materials)
SSD➣Site Specific Design (Brooklyn, NY)
SSD➣Svensk Samhällsvetenskaplig Datatjänst (Sweden)
SSD➣Sales, Service and Distribution (various companies)
SSD➣Super Star Destroyer (Star Wars)
SSD➣Stiftung Studenten Discount (German)
SSD➣Settori Scientifico-Disciplinari (Italian)
SSD➣Sveriges Statistiska Databaser (Swedish: Sweden's Statistical Databases)
SSD➣Small Screen Display
SSD➣Super Stardust Delta (gaming)
SSD➣Sum of Squared Differences
SSD➣Sterile Services Department (UK)
SSD➣Stopping Sight Distance
SSD➣Source Selection Decision
SSD➣Secure System Design
SSD➣Security Support Division
SSD➣Seattle School District
SSD➣Social Service Designee
SSD➣Susquehanna Service Dogs
SSD➣Starkville School District (Starkville, MS)
SSD➣Sisters School District (Oregon)
SSD➣Sudden Sniffing Death
SSD➣Single Song Download
SSD➣Specialized Services Division (Honolulu Police Department SWAT Team)
SSD➣Systems Software Development
SSD➣Self-Service Device
SSD➣Swedish Social Science Data Service
SSD➣Sectoral Social Dialogue
SSD➣Support Service Division (various organizations)
SSD➣Symposium on Large Spatial Databases
SSD➣Stahlschiebedach
SSD➣Single Seed Descent
SSD➣Silicon Strip Detector
SSD➣Shoreline School District
SSD➣Society System Decontrol (band)
SSD➣System Sequence Diagram
SSD➣species-sensitivity distribution (ecologic risk assessment)
SSD➣Social Science Database
SSD➣Security and Safety Document (customs)
SSD➣Staatssicherheitsdienst (East German Secret Service; Popular name: STASI)
SSD➣State Security Department (various nations)
SSD➣Singapore School for the Deaf
SSD➣Systems, Signals and Devices (International Conference)
SSD➣Static Separation of Duty
SSD➣So So Def (record label)
SSD➣Shelter Static Dehumidifier
SSD➣Sitka School District (Alaska)
SSD➣Supercomputer Software Department
SSD➣Special Security Division (Maquis Forces International)
SSD➣Support Staff Division
SSD➣Sociétés, Santé, Développement (French)
SSD➣Snorby Security Distribution (software)
SSD➣Schuldscheindarlehen (German promissory note)
SSD➣SMPTE Slave Driver (digital sync device)
SSD➣Source Surface Distance
SSD➣Solution Specification Document (software)
SSD➣Space Settlement Design
SSD➣Simple Storefront Distribution
SSD➣Sentinel System Driver
SSD➣Security Switching Device
SSD➣State Science Day (Ohio)
SSD➣Scientific Software Development
SSD➣Supervising Scientist Division (Australia)
SSD➣Science for Sustainable Development
SSD➣Structure Superposition Database
SSD➣System Support Division
SSD➣Sunnyside School District (Washington)
SSD➣Sprechen Sie Deutsch? (German: Do you speak German?)
SSD➣Searchable Serial Data-Store
SSD➣Special Sea Dutymen
SSD➣Seaford School District (Delaware)
SSD➣Super Speed Draft (printing)
SSD➣Santee School District (California)
SSD➣Severe Sustained Drought
SSD➣Sustainable Skills Development
SSD➣Stabilized Ship Detector (US Navy)
SSD➣Scrap Salvage Division (US Navy)
SSD➣System Specification Description
SSD➣Self-Sagging Device
SSD➣Stainless Steel Droppings
SSD➣Secondary Switching Device
SSD➣Shinyaku Seiken Densetsu (game)
SSD➣Standards Support Document
SSD➣Surveillance Systems Division
SSD➣Soulshot D Grade (Lineage 2 game)
SSD➣Super Sudden Death (gaming)
SSD➣Static Sensitive Device
SSD➣Scheduled Shipping Date
SSD➣Student Systems Development
SSD➣Software Services of Delaware, Inc
SSD➣Student Support Document
SSD➣Signal Space Detector
SSD➣Space Sciences Directorate (NASA)
SSD➣Simultaneous Signal Detection
SSD➣Safety Standards Division
SSD➣Shore Side Detachment
SSD➣Solid State Decoupler (electrical protection)
SSD➣Sourcing and Supplier Development (various companies)
SSD➣Serial Service Directory
SSD➣Safety, Security & Dismantlement
SSD➣Space Station Division
SSD➣Strategic Sourcing Director
SSD➣Satellite Systems Division
SSD➣Software Support Date
SSD➣Spacecraft Software Division (US NASA)
SSD➣Strategic Sales Director
SSD➣Sun-Synchronous Day/Night
SSD➣Second Start Dial
SSD➣Survival Support Device
SSD➣Software Solutions and Designs, Inc
SSD➣Structured File Server Definitions
SSD➣Systematic Sales Dialogue
SSD➣Squadron Support Division
SSD➣SHARE Secretary's Distribution
SSD➣Specialized Support Depot
SSD➣Sliding SideDoor (well construction)
SSD➣Single Source Distribution
SSD➣Safety Scoping Document
SSD➣Software Structural Description
SSD➣Strathclyde Standard Desktop
SSD➣Sub-Optimum Sequence Detection
SSD➣Sugar-Sweetened Soft Drink
SSD➣Server Side Daemon
SSD➣Strength Screening Device
SSD➣Space Systems Directorate
SSD➣SHINPADS Standard Display
SSD➣Squires Sanders and Dempsey LLP (law firm)
SSD➣Sheet Steel Decking
SSD➣Second-degree Stochastical Dominance
SSD➣Software Systems Database
SSD➣Service de Sûreté des Déchets Radioactifs (French: Department of Safety of Radioactive Waste)

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