I have ESXi 4 on a home-built server with a 925GB RAID5 array (adaptec 2405 card) with a single Centos5.4 VM running on it. The VM has a provisioned size of 20GB which I can't seem to increase using the vSphere client. Now I would like to either increase the size of the Centos VM to use more of the free space or I would like to somehow use the datastore as another volume that can be easily accessed from the Centos VM. Does anyone know how to achieve this? Thanks.