VMware ESXi 5.0 remove iscsi lun from datastore

Hello,

I have a datastore on ESXi 5.0 that consists of a 2.7TB  local disk and a 2TB  iscsi LUN. I want to remove the LUN. Is there a way to do that, or do I need to destroy the datastore and recreate it, this time assigning only the local disk?

What will happen if the LUN dies, or loses network connection?

At the moment I am considering adding a new datastore, shutting down the VMs and removing them from inventory, then moving their folders to the new datastore, and re-adding them to inventory.

I thought about using Veeam Backup to do migration, but it does not copy the snapshots and failed on machines that were not shut down.

Thanks!
rookie_bAsked:
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:
I have a datastore on ESXi 5.0 that consists of a 2.7TB  local disk and a 2TB  iscsi LUN. I want to remove the LUN. Is there a way to do that, or do I need to destroy the datastore and recreate it, this time assigning only the local disk?

when you state 2.7TB local disk, do you mean a virtual machine with a 2.7TB virtual disk?

or the physical disk is 2.7TB, and the datastore is 2.7TB, and it has a 2TB virtual machine disk ?

the 2TB virtual disk is used as an iSCSI Server with 2TB LUN?

In removing a datastore, the first thing that should be done, is the contents removed.

and then the datastore unmounted from the ESXi server.
0
Hypercat (Deb)Commented:
I'm not sure what you mean by "removing" the LUN.  Generally speaking if you don't need to have the host machine connected to that device any more, you can simply delete it from the storage configuration on the ESXi host.  The question, though, is where your VMWare software, logs, etc., reside and where the VMs are stored. A LUN is basically just an iSCSI connection to a physical location on a file server/NAS. So, where is that and what is stored there?
0
rookie_bAuthor Commented:
Hi,

Initially the datastore was 2.7TB, hosted on fixed local storage. THen we increased the size of the datastore by adding a 2TB iscsi lun from a NAS. Unfortunatelly, even though we haven't used the space - it is set to prefer the fixed storage, we cannot reverse it and reduce the size of the datastore. When I try detaching the iscsi target, it says it is being used in a datastore, so we cannot remove it.
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.

Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I'm not sure, I'm following here...

you have extended a local datastore, by adding an iSCSI LUN to it, as an extent?

so you have two datastores, connected to the ESXi server?

one on local storage and one on iSCSI storage?

or do you just have one single datastore?

If you have added additional storage to a local datastore, you will have to destroy the entire datastore, you remove the iSCSI LUN.

Could you upload a screenshot of your datastores?
0
rookie_bAuthor Commented:
I have a single datastore, which I increased by adding the iscsi. Now I realize it's a very bad practice, but I still need to deal with it. It looks like I will have to destroy it and rebuild it. I can move all the VMs, but there is a .locker folder with logs on it. That would probably prevent me from destroying the datastore, or will it?
0
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, you will need to move the ESXi logs off the server.

see my EE Article to change the location


Part 11: HOW TO: Suppress Configuration Issues System logs on host are stored on non-persistent storage
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
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.