We have a Dell PowerEdge T620 running VMware ESXi v5.5.0. It has a single virtual disk containing 6 x 600GB SAS disks in a RAID-10 configuration, attached to the PERC H710 controller, which has 512MB cache and a battery . We want to expand the array and so have already connected two more disks of the same size, which show up as "ready" in the iDRAC GUI.
We can use the GUI to add the new disks as dedicated hotspares, but there is no option to add the disks to the array to expand it.
We have installed the Dell "Perccli" VIB and can run perccli to administer the array.
How do we either use perccli or some other method to add the disks to the array and expand it?