Citrix XenServer “Boston” Beta Program announced

Citrix has announced availability of the XenServer “Project Boston” Beta.  If you are a XenServer or XenDesktop customer with an active subscription advantage (SA) contract, you can download the full beta from (downloads section) using the account associated with your SA contract.

Note: if you are not a current customer you can also download the “Free XenServer” version of the Boston Beta from the download section of

Below is an overview of what’s included in Project Boston.

Disclaimer: The development, release and timing of any features or functionality described for our products remains at our sole discretion and is subject to change without notice or consultation. The information provided is for informational purposes only and is not a commitment, promise or legal obligation to deliver any material, code or functionality and should not be relied upon in making purchasing decisions or incorporated into any contract.

Product simplification. We’ve done a number of things to make the product even easier to deploy and manage.  These include:

  • XenServer has simplified the management infrastructure requirements for features such as Workload Balancing, StorageLink, and Site Recovery.  In fact, for StorageLink and Site Recovery, no additional management infrastructure is required at all.
  • Workload Balancing (and its Historical Reporting features) is available as a Linux-based virtual appliance for easy installation and management.
  • The Linux supplemental pack has been removed, so there is only 1 base installation CD. “Linux demo VM” functionality has been moved to a virtual appliance format so it can be easily imported into a host or resource pool.

Architectural Changes

  • The Boston release is based on the Xen 4.1 hypervisor
  • The Open vSwitch (OVS) is now the default network stack for the product.   OVS was first introduced in XS 5.6 FP1 as a post-install configuration option, and is the basis for the distributed virtual networking (DVS) features, NIC bonding improvements, and  jumbo frames support .  Improvements to DVS include improved availability through the “fail-safe” option, as well various improvements based on customer feedback from XenServer 5.6 FP1. Note that the legacy Linux bridging stack is still available via a post-install configuration option
  • General network performance has been improved, particularly aggregate host network throughput; internal measures vs. prior XS releases show gains of 70-100% in some instances
  • Support for hardware-assisted (SR-IOV) network performance optimizations has been improved, particularly for use with the NetScaler VPX and SDX products

Tools for Self-Service and building Clouds

  • The new Self Service Manager feature enables you to build self-service environments for “private clouds.”  (Note: Self-Service Manager beta is targeted for availability in approximately 2 weeks).  Self-Service Manager includes support for both XenServer as well as VMware vSphere
  • Self-Service Manager is easy to deploy and manage via a simple virtual appliance and web-based UI.  It offers multi-tenant support for creating VM “service catalogs” used by delegated administrators to deploy and manage their own applications and resources
  • Virtual Appliance support.  Within XenCenter you can create multi-VM virtual appliances (vApps), with relationships between the VMs for use with the boot sequence during Site Recovery.  vApps can be easily imported and exported using the Open Virtualization Format (OVF) standard
  • VMDK and VHD import functionality is integrated into XenCenter for interoperability with VMware VMDK and Microsoft VHD disk images. Reliability of the “transfer VM” used for appliance import/export has been improved

Microsoft System Center integration

  • Starting with the Boston release, you will have the option of managing XenServer hosts and VMs with System Center Virtual Machine Manager (VMM) 2012.  For more information refer to the Microsoft System Center 2012 beta page
  • System Center Operations Manager 2012 will be able to manage and monitor XenServer hosts and virtual machines
  • System Center integration is available with a special supplemental pack from Citrix, which is targeted for general availability when System Center 2012 ships later this year


  • Boston is the first XenServer release to include HDX enhancements for optimized user experience with virtual desktops
  • With the Boston release, a physical GPU can be assigned to a VM so the applications running in the guest can leverage GPU instructions (“GPU pass-thru”).  This provides significant TCO benefits for the XenDesktop HDX 3D Pro technology used for delivery of CAD and other graphical applications via virtual desktops

Guest OS support updates

  • Formal guest support for Ubuntu 10.04
  • Updates for support of RHEL 5.6
  • Experimental VM templates for Ubuntu 10.10, CentOS 5.6, and SLES 10 SP4, and Solaris
  • Note also that RHEL 6 is fully supported (also supported with XS 5.6 SP2)

Other enhancements and improvements

  • A “rolling pool upgrade” wizard is provided in XenCenter to enable more reliable upgrades from 5.6 and 5.6 FP1.
  • High Availability (HA) permits configuration of a boot sequence for recovery, as well as storage of the heartbeat disk via NFS
  • Host RAM support has been increased to 1 TB
  • VM vCPU and vRAM support is increased e.g. up to 16 vCPUs and 128 GB RAM for Windows; increased Linux vCPU and vRAM support levels vary by distro
  • NIC bonding reliability is improved, and formal support for active/passive bonding has been added
  • XenCenter will be localized into Japanese and Simplified Chinese (these will be generally available a few months following the English release)

For more information click here