iSCSI LUN size limit in server 2003?

Windows server 2003 SP1 with Microsoft's iSCSI Initiator software.
On my NAS I create a 2TB LUN and then connect to it my Windows box, windows sees the drive but it shows up as unreadable and doesn't see how big it is. If we cut  it down to 1TB it works fine, 1.5TB - no go.

Is there a limit to the size of an iSCSI LUN? According to our vendor we should be able to create a 2TB LUN, they are still trying to figure out why it won't work. They created the same setup on their system and ran into the same problem.

We have a few Apple Xraids connected via fiber channel and those volumes are over 4TB. Anyone have any ideas what might be our problem here?
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js479Asked:
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bhanukir7Connect With a Mentor Commented:
Hi,

As far as the os is concerned prior to win2003 SP1 it was not supported but with SP1 larger volumes are supported.

read this microsoft article

http://www.microsoft.com/whdc/device/storage/LUN_SP1.mspx

If it is still not working then should ask your vendor to open a support ticket with microsoft or they need to assist you on that.

bhanu
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js479Author Commented:
Ended up making a 1TB LUN and then expanding it to 1808GB, then run diskpart on the windows box. Took some nudging but it's working now.
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NeoGenomicsCommented:
I had a LUN presented to my Windows 2008 server with 1.3 TB and now I added 1TB more and I cannot see my free space.When I open the Server Manager I cannot add any other volume because of Windows says I do not have room for it.Any advice?

Also from diskpart I only see some Gbs free,same I had before I expanded it from 1.3TB to 2.13 TB.

Thanks
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