VMware Communities: Message List - In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

TimPhillips — Mon, 27 Jul 2009 08:41:37 GMT

If you are using iSCSI I recommend you to take a Starwind target for it. I use for myself for long time already, and it`s very robust, according to my lab test. The only limit of free version it`s 2 Tb limit, what can be a trouble in your case, but I would recommend it to ypu anyway.

Tim.

Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

dragooner — Mon, 27 Jul 2009 06:24:41 GMT

Oh.Thank you guys.All of you are such good man.I am very happy to receive your suggestion.

Some guys said right,it still have the limited in vSphere4.But we can use some methods to make a lun bigger than 2T.

Just do it ike the pictures in the attachments.

U will see an error 1-6,that's just because I click the mouse too quickly.:)

Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

Texiwill — Mon, 06 Jul 2009 20:09:26 GMT

Hello,

Moved to ESX 4 forum.

Joerg has the correct answer. THe extra 512bytes used by vSphere has already caused some issues with migrations so if you are going to migrate you need to ensure the RDM/VMFS is properly sized.

Best regards,
Edward L. Haletky VMware Communities User Moderator, VMware vExpert 2009, Virtualization Practice Analyst
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Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

Altix — Sat, 04 Jul 2009 20:28:21 GMT

The exact answer would be "the limit is 2TB-512bytes".

Regards
Joerg

'Remember if you found this or others answers helpful do not forget to award points by marking an answer as helpful or correct'

Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

VMmatty — Sat, 04 Jul 2009 14:40:47 GMT

If you need to exceed the 2 terabyte limit of a VMFS partition, you'll need to present the LUN inside the virtual machine. If you have an iSCSI SAN, it is easy to do this by simply using the software initiator inside the guest to present the larger LUN.

Unfortunately an RDM won't work either as that has the same 2TB limit as a VMFS partition.

Re: In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

Anton V Zhbankov — Sat, 04 Jul 2009 12:18:21 GMT

vSphere still has limitation of 2TB
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In the software vSphere4.0 ,the vmfs lun or RDM lun can be larger than 2T?

dragooner — Sat, 04 Jul 2009 11:39:35 GMT

Hello:

AMM, I am just an Engineers,and do some test work about the vmware VI3 or VI4 software.Now, I have a customer who has an application needs a 4T space.

But, in my Laboratory I do not have such large storage. So is there any body or any good guys have all ready yet done the test which is about the lun large than 2T in the new software vSphere4? Please just tell me the results.

Or there some body could give the step by step configuration,it will be much useful.

I have looked for the topic about these things in the community, some one say could,some one say the 2T limited is still. Can some body give me an exact answer.