Q

How NAS blades in director-class switches work

Will NAS blades in director-class switches be a more popular architecture in the future? Can you talk a little...

bit about how this technology works?

It is certainly not clear at this time if NAS blades in director class switches will be popular or not. Right now, I would have to say no for several reasons.

NAS devices are typically self-contained and are not widely used in enterprise data center environments where you find director-class switches. NAS gateways seem to be the preferred method for getting NAS access to storage in a SAN and putting a NAS blade in a switch is effectively making the switch act as a gateway. Combining the functionality of a switch with a NAS gateway can lead to some issues having to do with vendor lock in, administration issues, organizational tension for the person in charge of a resource and an overall lack of flexibility in changing a topology over time. I think the negatives outweigh the positives at this time.

As for technology, it is relatively simple. You put a server (a processor with memory) on a card and plug it into the backplane of a switch/director. The blade server has a NIC for network access and connects to the switch ports for storage access just like it would if it was external. A LUN (or multiple LUNs) will have to be allocated to the NAS blade just like for a gateway to use for filesystem(s).

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 last published in June 2003

Dig Deeper on NAS hardware

PRO+

Content

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

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

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

SearchSolidStateStorage

SearchConvergedInfrastructure

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

Close