According to the log file, the VM has 5 virtual disks (3x IDE and 2xSCSI). Unfortunately the vSphere Client GUI does not allow to increase IDE disks (no idea why) and you either need to do this from the command line (vmkfstools -X) or convert the disks to SCSI (see http://kb.vmware.com/kb/1016192). No matter what you do, ensure you have an up-to-date backup in place in case something doesn't work as expected.
André
