Ask the Expert

Is HA a subset of clustering?

Is HA a subset of clustering?

Requires Free Membership to View

In my opinion, the answer to your question is no.

High Availability (HA) is a design goal; are your systems sufficiently available for them to achieve the goals for which you purchased them? If so, then they are highly available, otherwise they are not. And every application in every enterprise has its own availability requirements. Ebay.com's e-commerce systems are more critical to its operation (and its bottom line) than its development servers, for instance.

Technologies like clustering, mirroring, replication and tape backups are just that, technologies. They are the tools that will enable you to increase your systems' availability to appropriate levels but they themselves are not HA.

I hope this helps. Feel free to follow up if you have additional questions.

Evan L. Marcus

Editor's note: Do you agree with this expert's response? If you have more to share, post it in our .HcX6azlxeJg^0@.ee83ce2!viewtype=&skip=&expand=>Administrator Central discussion forum.


This was first published in July 2002

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: