Cannot increase data store

The SAN volume was expanded from 2 TB to 4TB so we could increase the data store.  A scan was performed on the storage adapters and it recognized the added 2TB of space.  However, when we tried to increase the data store the device was not available to choose for expansion.  What do I need to do to see the LUN and expand the data store?  

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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.

What version of ESXi?  I learned the hard way ESXi 4 has a 2TB limit
NytroZAuthor Commented:
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You should see he additional size in the LUN window.

something is no recognising the expanded LUN.
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

NytroZAuthor Commented:
It appears the iSCSI adapters can see the added space but it does not allow me to add it.
NytroZAuthor Commented:
For whatever reason, after the host ESXi servers were rebooted, the data store was able to see the additional space and add it.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
That is very odd.

Is your SAN on the VMware HCL.

I would ask the SAN vendor.

This should be "plug and play"
NytroZAuthor Commented:
It is a Dot Hill DH3320 SAN.  This task has been done several times in the past with the same SAN.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Personally, we've never seen this issue. I would raise with Dot Hill.

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
NytroZAuthor Commented:
Dot Hill explained that the SAN and the host were not seeing eye to eye in terms of LUN's.  They said the logs indicated that the LUN was originally named LUN 0 but was later renamed LUN 1 but never was restarted/reset to accept those changes.
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

From novice to tech pro — start learning today.