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Cannot extend datastore after increasing capacity in VMWare ESX 5.1

Posted on 2014-04-23
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Last Modified: 2014-05-15
We increased our datastore size on the storage system from 4TB to 5TB on a VMWare ESX 5.1 host. When we went to increase the size on the datastore, we see the a capacity at 5TB available.  When we click the increase button, we do not see that extent disk space to add to the datastore. We have been able to increase in the past so not sure if we hit some limit or not.
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Question by:gregurl
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LVL 119
ID: 40018887
Does your ESXi 5.1 installation share the same logical disk as the VMFS partition?

Previously there were 2TB limits but these have since been removed, and this would have affected you with 4TB datastore.
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by:gregurl
ID: 40018906
No, the installation has it own logical and physical disks.
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LVL 119
ID: 40018926
So this datastore storage is a SAN or Local Disk?

What's the server and storage controller?

Have you refreshed and Re-scanned Storage?

and I assume, that when you select Properties for the Datastore, and select Increase, follow the wizard, the 1TB new space is not present?

we see the a capacity at 5TB available

where are you see-ing this?

We increased our datastore size on the storage system from 4TB to 5TB on a VMWare ESX 5.1 host.

How was this done?
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by:gregurl
ID: 40019012
On a SAN. A HP 3par 7400 Fiber channel.

Cisco UCS fiber channel to 3par

Yes, re-scanned and refreshed.

Yes, select properties for the datastore and select Increase but do not see the 1TB space.

We see this on the when we right click on the datastore and select properties . The bottom right box shows 5TB and 4TB.
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LVL 119
ID: 40019089
You should be able to span LUNs, if you just create a new temp LUN, and present to this server, does it appear in the Wizard to expand into?

the LUN is expanded correctly?
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gregurl earned 0 total points
ID: 40056636
The solution was to not use the vCenter but go directly to the ESX host. When we went directly to the ESX host, the extent showed up as normal.  VMWare tech support says it probably some bug but did not specify an exact bug. There is a caution when going outside the vCenter because some filters could be in place protecting data loss in the vCenter.
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by:gregurl
ID: 40066735
This solution resolved the issue.
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