Q

Volume showing up twice: What am I doing wrong?

I am new to SAN technology. My problem is that I have created a volume in my SAN box and assigned it to one of my servers. But in the server, it is showing up twice. One is accessible and the other is not. What am I doing wrong?
You may want to verify the configuration of your SAN box and determine if you have dual or redundant controllers. Assuming that you have only the one LUN or volume that you created and made accessible to your server, if you have a dual controller and your server saw both controllers, then it would appear on your server that you have two volumes when in fact you only have one. Similarly if you had a single controller, however two adapters (HBAs), attached to the storage device via a switch, it is possible that your server might see it two times. Check your volume mapping and masking along with volume manager and adapters settings.
This was first published in February 2005

Dig Deeper on SAN management

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.

0 comments

Oldest 

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:

-ADS BY GOOGLE

SearchSolidStateStorage

  • Flash technologies remain hot in 2016, experts predict

    Experts predict solid-state technology will remain hot in 2016, leading to the demise of high-speed hard disk drives, as ...

  • Tintri VMstore T5000

    Like all of its VM-aware storage systems, Tintri’s first all-flash array -- the Tintri VMstore T5000 -- allows admins to bypass ...

  • SolidFire SF9605

    The high-capacity SolidFire SF9605 uses SolidFire’s Element OS 8 (Oxygen) to deliver new enterprise features such as synchronous ...

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

Close