Increase Datastore on VMWare VSphere

We upgrade from Vmware 3.5 to Vmware VSphere 4.0.
Now we want to change our datastores, when i rescan the storage adapters, it shows the new capacity.
But when i want to increase de datastore i get this error message: "Error during the configuration of the host: Failed to get disk partition information."

Thx in advance!!
isabelle_spiessensAsked:
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eabeukesCommented:
You need to unmount and then re-mount the datastore, and then retry the grow operation. Sometimes the storage system doesn't send the correct LUN parameters through and fails the grow operation.
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isabelle_spiessensAuthor Commented:
Hey Eabeukes,

Do i have to do this on the esx command line?
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bbnp2006Commented:
Just curious, what's the total size of the LUN that you are trying to add or expand?
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vmwarun - ArunCommented:
1.What is your initial datastore size and to what size do you want it to extend ? (in MB, GB or TB)
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bbnp2006Commented:
Note that although VMWare's MAX config says 2TB for each LUN, but it's best practice to use smaller LUN (600GB -1 TB for example).
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isabelle_spiessensAuthor Commented:
The total size is 2.45TB and for the moment 1.91TB. So the extend is 0.54TB.
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vmwarun - ArunCommented:
I would not recommend using the extent feature since this can result is SCSI Reservations issue.
The better option would be to create a new LUN with the required size and move the intended VM.
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bbnp2006Commented:
Yes, I agree with Arunraju. Try to avoid it if you can. In case of scsi reservation issue on your first LUN, all its extended LUN will be locked as well. Not a situation you want to be in.
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