Beginning with version 2.5 of PGP Universal Server, VMware ESX 3.0 is a supported platform. PGP Universal Server 2.8.0 - 2.12.0 are now certified to operate with VMWare ESX Server Standard 3.0 including VMware Tools.
This article applies to PGP Universal Server 2.8.0 - 2.12.0.
The system requirements for the PGP Universal Server are described in the Release Notes as follows:
Note: VMware ESX 3.5 is supported on versions of PGP Universal Server 2.9 and above.
Sufficient processing power equivalent to a 3 GHz Intel Xeon must be dedicated to the PGP Universal VM. VMWare tools must be installed and configured inside the PGP Universal operating system.
Disk space requirements:
Small/medium environment - 50 GB minimum allocated to the VMWare instance; 4 GB RAM dedicated to the VMWare instance.
Medium/large environment - 100 GB minimum allocated to the VMWare instance; 8 GB RAM dedicated to the VMWare instance.
This article provides a technical document detailing the Best Practices for installing a PGP Universal Server on VMWare ESX Server.
Note: Do not use the VMWare Tools Timesynch and NTP at the same time, the two services will conflict and can cause unintended problems with backups and other services.
The vmware tools will make sure the time is set correctly to the clock on the Host Server. If you would like to implement NTP please do so for the host OS rather than the guest.