Guest operating system support 编辑

When installing VMs and allocating resources such as memory and disk space, follow the guidelines of the operating system and any relevant applications.

• All supported operating systems run in HVM mode.

  Support for paravirtualized (PV) VMs was removed in Citrix Hypervisor 8.1. Remove PV VMs from your environment before moving to Citrix Hypervisor 8 Cloud.

• Individual versions of the operating systems can also impose their own maximum limits on the amount of memory supported (for example, for licensing reasons).

• When configuring guest memory, do not to exceed the maximum amount of physical memory that your operating system can address. Setting a memory maximum that is greater than the operating system supported limit might lead to stability problems within your guest.

• To create a VM of a newer minor version of RHEL than is listed in the preceding table, use the following method:
  • Install the VM from the latest supported media for the major version
  • Use yum update to update the VM to the newer minor version

  This approach also applies to RHEL-based operating systems such as CentOS and Oracle Linux.

• Some 32-bit Windows operating systems can support more than 4 GB of RAM by using physical address extension (PAE) mode. To reconfigure a VM with greater than 4 GB of RAM, use the xe CLI, not Citrix Hypervisor Center, as the CLI doesn’t impose upper bounds for memory-static-max.

Long-term guest support

Citrix Hypervisor includes a long-term guest support (LTS) policy for Linux VMs. The LTS policy enables you to consume minor version updates by one of the following methods:

• Installing from new guest media
• Upgrading from an existing supported guest

Out-of-support operating systems

The list of supported guest operating systems can contain operating systems that were supported by their vendors at the time this version of Citrix Hypervisor was released, but are now no longer supported by their vendors.

Citrix no longer offers support for these operating systems (even if they remain listed in the table of supported guests or their templates remain available on your Citrix Hypervisor hosts). While attempting to address and resolve a reported issue, Citrix assesses if the issue directly relates to an out-of-support operating system on a VM. To assist in making that determination, Citrix might ask you to attempt to reproduce an issue using a supported version of the guest operating system. If the issue seems to be related to the out-of-support operating system, Citrix will not investigate the issue further.

Note:

Windows versions that are supported by Microsoft as part of an LTSB branch are supported by Citrix Hypervisor. Windows versions that are out of support, but part of an Extended Security Updates (ESU) agreement are not supported by Citrix Hypervisor.