Use complex passwords when setting a password for ESX. See VMware password requirements and restrictions. If you do not use a complex password, then the root password is not correctly set to the desired value and the active value is the string default. The OSIM install log records the failure to set a password, but does not fail the job as a whole.
Installation on Cisco UCS Systems and other systems with multiple disks. The default OSIM ESX installation deletes all partitions from the first detected hard disk only. If the target hardware contains two or more disks and the ESX installation detects that any VMFS partitions are present, then the installation aborts. This behavior by the installer ensures that any virtual machines are not destroyed. If it is required to provision ESX servers that already have existing VMFS partitions on non-primary disks, then modify the kickstart file such as ks.cfg, to add the overwitevmfs switch to the clearpart command, as follows:
clearpart --overwritevmfs --firstdisk
The ESXi host hypervisor environment does not support installation and/or operation of the native DSM agents. Use the AM RVI module for discovery of ESXi instances. Installation of a native DSM agent is supported on a guest running as ESXI virtual machines, dependent on the installed operating system and version.