I'm new to 3PAR and currently migrating data over from a number of Lefthand. All is going well except I notice that we're not really reclaiming space from the vluns presented to ESX5.5.
For example, I have a few 1.5TB vluns which were used in migration but now contain no data. VMware reports only a few hundred MB in use which is what I expect. The 3PAR still shows approx. 1100GB used. I have connected to one of my ESX hosts and ran the command below to unmap the datastore in 1GB chunks
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esxcli storage vmfs unmap -l datastorename -n 1000
The command takes approx. 3 minutes to execute. Using esxtop I can see the space being reclaimed. On the 3PAR I then run a compactcpg but only see anything between 10-30GB reclaimed.
Does anybody see the same issue? From what I understand the above should unmap all space.....