Guest operating system support

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

Operating System Minimum RAM Maximum RAM Minimum Disk Space
Windows 8.1, Windows 10 (32-bit) 1 GB 4 GB 24 GB (40 GB or more recommended)
Windows 8.1 (64-bit) 2 GB 512 GB 24 GB (40 GB or more recommended)
Windows 10 (64-bit) [Latest tested version is 1909] 2 GB 1.5 TB 32 GB (40 GB or more recommended)
Windows Server 2012, Windows Server 2012 R2 (64-bit) 1 GB 1.5 TB 32 GB (40 GB or more recommended)
Windows Server 2016, Windows Server Core 2016 (64-bit) 1 GB 1.5 TB 32 GB (40 GB or more recommended)
Windows Server 2019, Windows Server Core 2019 (64-bit) 1 GB 1.5 TB 32 GB (40 GB or more recommended)
CentOS 7.x (64-bit) [Latest tested version is 7.7] 2 GB 1.5 TB 10 GB
CentOS 8.x (64-bit) [Latest tested version is 8.0] 2 GB 1.5 TB 10 GB
Red Hat Enterprise Linux 7.x (64-bit) [Latest tested version is 7.6] 2 GB 1.5 TB 10 GB
Red Hat Enterprise Linux 8.x (64-bit) [Latest tested version is 8.1] 2 GB 1.5 TB 10 GB
SUSE Linux Enterprise Server 12 SP3, 12 SP4, 12 SP5 (64-bit) 1 GB 1.5 TB 8 GB
SUSE Linux Enterprise Server 15, 15 SP1 (64-bit) 1 GB 1.5 TB 8 GB
SUSE Linux Enterprise Desktop 12 SP3, 12 SP4 (64-bit) 1 GB 1.5 TB 8 GB
SUSE Linux Enterprise Desktop 15, 15 SP1 (64-bit) 1 GB 1.5 TB 8 GB
Oracle Linux 7.x (64-bit) [Latest tested version is 7.6] 2 GB 1.5 TB 10 GB
Oracle Linux 8.x (64-bit) [Latest tested version is 8.0] 2 GB 1.5 TB 10 GB
Scientific Linux 7.x (64-bit) 2 GB 1.5 TB 10 GB
Debian Jessie 8 (32-bit) 128 MB 64 GB 8 GB
Debian Jessie 8 (64-bit) 128 MB 1.5 TB 8 GB
Debian Stretch 9 (32-bit) 256 MB 64 GB 10 GB
Debian Stretch 9 (64-bit) 256 MB 1.5 TB 10 GB
Debian Buster 10 (64-bit) 1 GB 1.5 TB 10 GB
Ubuntu 16.04 (32-bit) 512 MB 64 GB 10 GB
Ubuntu 16.04 (64-bit) 512 MB 1.5 TB 10 GB
Ubuntu 18.04 (64-bit) 512 MB 1.5 TB 10 GB
Ubuntu 20.04 (64-bit) 512 MB 1.5 TB 10 GB
CoreOS Stable (64-bit) [Latest tested version is 2191.5.0] 2 GB 512 GB 8 GB
NeoKylin Linux Advanced Server 7.2 (64-bit) 1 GB 1.5 TB 10 GB
  • All supported operating systems run in HVM mode.

    Support for paravirtualized (PV) VMs is removed in Citrix Hypervisor 8.1. You can import existing VMs that use these operating systems into your Citrix Hypervisor 8.1 or later installation. However, Citrix does not provide support for VMs with these operating systems. Upgrade your VMs to a more recent and supported version of the OS as soon as possible.

  • 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 XenCenter, 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.

Guest operating system support