We have two hosts running VMWare ESXi 4.1. Both are connected to a RAID 5 array via iSCSI. We added three more disks to the RAID array. Now I need to assign the new storage somehow to the ESXi hosts. Right now we have one VMFS 3.46 datastore that consists of two LUNs on that array. Both ESXi hosts connect to that single datastore.
What would be the best way to add the new storage to the ESXi hosts? Should I just grow one of the LUNs to add the extra storage and then grow the VMFS? Or should I add about half of the extra storage to each LUN and grow the VMFS? Or should I create one (or two?) extra LUNs to add to the VMFS?