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VMware vSphere 5.5 Cookbook by Abhilash G B

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Extending a VMFS datastore

In the recipe Expanding/growing a VMFS datastore, we discussed the procedure involved in increasing the size of a datastore on the same LUN backing the VMFS volume, and that was possible only if the LUN has unused free space on it or was expanded.

You can run into a situation where there is no unused space on the LUN backing the VMFS volume, but your datastore runs out of space. Fortunately, vSphere supports the spanning of a VMFS volume onto multiple LUNs. This means you can span the VMFS volume onto a new LUN so that it can use the free space on it. This process of spanning a VMFS volume onto another LUN is called extending a VMFS datastore.

Getting ready

The VMs running on the volume can still remain powered on while ...

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