Ask the Expert

Addressing the issue of content-addressed storage

What is content-addressed storage?

Requires Free Membership to View

Content addressable storage is a storage system that uses the content of the data as a locator for the information.

Typically, this is implemented by using a polynomial algorithm on the data to resolve to a unique ID. That ID, sometimes called a signature, is then associated with metadata as to the actual location of the data. Only the ID is then available to the application, or user if you will, to be able to access that data. One unique aspect is that if the exact same data is written again, it will resolve to the save identity so that no duplicate data will actually be stored.

This is really an early form of object-based storage. The concept is not really new. It's very interesting to me because my graduate work at the University of Colorado was on content addressable memory where similar techniques were used for placement of data in random access memories. That was about thirty years ago.

Randy Kerns
Evaluator Group, Inc.

Editor's note: Do you agree with this expert's response? If you have more to share, post it in one of our .bphAaR2qhqA^0@/searchstorage>discussion forums.


This was first published in August 2003

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: