Definition

RAM-based solid state drive (SSD)

A RAM-based solid state drive is a storage device that is made from silicon microchips, has no moving parts and stores data electronically instead of magnetically.

There are two types of solid state drives:  flash-based and RAM-based.  Although flash solid state media has a finite number of program/erase (P/E) cycles, a typical RAM SSD does not face the same write cycle limitation. 

A RAM-based solid state drive uses DRAM or SRAM chips, both of which are volatile. This means that a RAM-based drive will lose its contents when the power is turned off.  To preserve the contents of a RAM-based solid state drive, data is copied from volatile memory to nonvolatile memory upon instruction or when the drive is powered down.  Generally, a RAM-based SSD have batteries that keep the data alive long enough for it to be copied to nonvolatile memory in the event that power accidently gets shut off.  

RAM-based SSDs are often used in financial, telecom, e-commerce and other fields in which high latency or downtime cannot be tolerated.  Although they are more expensive than their flash-based or electromechanical counterparts, RAM-based drives offer significantly better performance than other types of storage media  and are especially well-suited for write-heavy applications or write-intensive files within an application.

This was last updated in January 2012

Continue Reading About RAM-based solid state drive (SSD)

Dig Deeper on Solid state storage technology

PRO+

Content

Find more PRO+ content and other member only offers, here.

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchConvergedInfrastructure

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

SearchStorage

SearchITChannel

Close