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How to Carve up LUN into 2 separate LUNs

Posted on 2008-10-02
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Last Modified: 2013-11-14
Hi, I have a 400GB LUN that is not assigned to any server or allocated to any Storage Group, so there's no data to protect on it.  I have Navisphere 6.26 and what I want to do is carve this 400GB LUN into 2 200GB LUNs, then assign the 2 new LUNs to 2 separate Storage Groups.  With Navisphere, how would I go about doing this?

Thank you,


Chad
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Question by:TTU_LAW_IT
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Duncan Meyers earned 125 total points
ID: 22631097
You can't carve up the LUN into two seperate LUNs. You have to destroy it an recreate it.

 - Remove the LUN from any storage groups that it may be in (beware that the host will complain bitterly. If you have PowerPath, you'll need to delete the paths to the LUN that you removed.)
 - Right click on the LUN and select Unbind...
 - *Read* then accept the warnings. The LUN will then be destroyed.
 - Right click on the RAID group and select Properties. Click on the Properties tab. If the 400GB LUN was at the end all the LUNs on that RAID group, then you'll see that there is a section in green on the left of the partition map, and the right hand side of the map will be blue. If the blue section is surrounded by green bits, click the Defragment button, accept the warning and come back to this in a couple of days time. You'll see a blue 'T' against the CLARiiON - this indicates that the array is transistioning. The blue 'T' will go away when the defrag completes. Note that this is not the same as an opertaing system defrag.
 - Once the defrag completes if applicable, right click on the RAID gropup and select Bind LUN...
 - In the Bind LUN dialogue, enter the size and select the GB or MB radio button. Put 2 in the "number of LUNs to bind" box. Click OK
 - The array will bind two new LUNs
 - Add the LUNs into the storage groups as necessary.
 - Done!

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by:TTU_LAW_IT
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Thank you, meyersd, your information was spot on.
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by:Duncan Meyers
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Thanks! Glad I could help.
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