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B.6. Guest Requirements and Support Limits

The following requirements and support limits apply to guests that are run on the Hypervisor:
Table B.5. Virtualized Hardware
Item Limitations
CPU
  • A maximum of 64 virtualized CPUs per guest is supported.
RAM
Different guests have different RAM requirements. The amount of RAM required for each guest varies based on the requirements of the guest operating system and the load under which the guest is operating. A number of support limits also apply.
  • A minimum of 512 MB of virtualized RAM per guest is supported. Creation of guests with less than 512 MB of virtualized RAM while possible is not supported.
  • A maximum of 256 GB of virtualized RAM per 64 bit guest is supported.
  • A maximum of 4 GB of virtualized RAM per 32 bit guest is supported. Note that not all 32 bit operating systems are able to register an entire 4 GB of RAM.
PCI devices
  • A maximum of 32 virtualized PCI devices per guest is supported. A number of system devices count against this limit, some of which are mandatory. Mandatory devices which count against the PCI devices limit include the PCI host bridge, ISA bridge, USB bridge, board bridge, graphics card, and the IDE or VirtIO block device.
Storage
  • A maximum of 8 virtualized storage devices per guest is supported.