Unable to create new partition

I have a Dell PowerEdge 2950 that is a year old and just added 3 additional 1TB drives to the RAID-5 array. After waiting literally days for the array to expand and fully initialize. I was horrified to find that Windows 2008 see's 2 additional blocks of space instead of one, and the last block, which has almost all the space, won't allow me to make a partition at all.

I badly needed to add more space and don't understand why it won't let me. Can someone explain why, and what a better setup would be?
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evolutionmsAsked:
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Henrik JohanssonSystems engineerCommented:
MBR has a limit of 2TB. It can be converted to GPT, but the problem is that all partitions nead to be removed before converting the disk to GPT.
http://social.technet.microsoft.com/Forums/en-US/winserversetup/thread/2002f3a3-a841-4f31-842a-a08cc530727a
http://technet.microsoft.com/en-us/library/cc738416.aspx
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evolutionmsAuthor Commented:
Thank you for the pointers there. That example in the first hyperlink is almost exact to my situation and very applicable. Thanks!
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Windows Server 2008

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