Remove previous Boot-From-SAN LUN from ESXi 5.5

Hi Experts,

I am moving hosts from one SAN to another one.  We are using UCS and boot from SAN.

So I zoned everything and installed VMware 5.5 to a new 15 GB LUN, I am booting from that new LUN.  The problem is that the old boot from SAN LUN is still there (accessible from the host).

I tried to do the normal Unmount and then Detach but it fails because the device still contains a diagnostic partition (from the original boot from SAN partition).

How can I delete the old coredump partition so I can remove this old, unneeded datastore?

Thank you all,

S.....
svillardiAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Remove the LUN from the SAN.
0
svillardiAuthor Commented:
Won't that give me an APD issue?
0
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You could mask the LUN in ESXi.
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

svillardiAuthor Commented:
Andrew, I deleted the LUN, although now I'm concerned about APD.

But this seems to say that VMware can now tell if the datastore is permanently deleted or not.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2059622

How can I tell if this feature is working properly?  In other words, how can I tell if I will have a problem?  Is there some CLI command which will tell me more about the storage?

Thanks,

S.....
0
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
If you re-scan the storage HBA.

have you also check the logs
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
compdigit44Commented:
I ran into an issue like this before. I unmounts tried to unmounts a datastore from a host but no make what I did the datastore was still seen. Long story short I was not removed from the zoning on the SAN. Long story short as long as the lun is zoned to a host it will show up
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
VMware

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.