Increase the size of volumes and LUNs
You can increase the size of your volume or LUN so that more space is available to your host. The size of a LUN cannot exceed the size of the containing volume.
To increase the size of a volume, click Storage > Volumes.
To increase the size of a LUN, click Storage > LUNs.
Hover over the name of the volume or LUN you want to increase in size, click , and select Edit.