Definition

flash cache

Contributor(s): Carol Sliwa

Flash cache is the temporary storage of data on NAND flash memory chips to enable requests for data to be fulfilled with greater speed.

In a common scenario, the system stores a temporary copy of the most active data in the flash cache and a permanent copy of the data on a hard disk drive (HDD). The goal of flash caching is to store previously-requested data as it travels through the network so it can be retrieved quickly when it is needed again. Placing previously requested information in temporary storage, or cache, reduces demand on an enterprise's bandwidth in addition to speeding up access to data.

A flash cache is often used in tandem with slower hard disk drives (HDDs) to improve data access times. The form factor of the NAND flash is typically a solid-state drive (SSD), a PCI Express (PCIe) card or a DIMM-based flash device installed in a server's memory sockets. Many flash cache appliances have built-in logic that decides what data should be placed in cache so when read requests are received, the appliance can answer them.

This was last updated in July 2014

Next Steps

Read a review of the many features of HP's 3PAR StoreServ 7000 Series , which has enough GB for an optional flash cache.

Continue Reading About flash cache

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