Definition

flash cache

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

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) or a PCI Express (PCIe) card. 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 an HDD. When a data request is made, the flash cache serves the data, if a copy of it is available in the cache.

Flash cache can be located in the server, storage or network, and there are multiple ways to implement it. There are two main types of cache: read and read/write. Cache requires a warm-up time to populate it, and as more data enters the cache, more requests can be accelerated.

Numerous commercial offerings incorporate the term "flash cache" into their product names.

Contributor(s): Carol Sliwa
This was last updated in July 2013
Posted by: Margaret Rouse

Email Alerts

Register now to receive SearchSolidStateStorage.com-related news, tips and more, delivered to your inbox.
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

More News and Tutorials

Do you have something to add to this definition? Let us know.

Send your comments to techterms@whatis.com

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
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
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: