Citrix XenServer 6.5 virtualization platform offers 64-bit kernel architecture

Citrix said XenServer 6.5, its latest virtualization platform being unveiled in Q1 2015, now offers a full 64-bit kernel architecture.

XenServer supports Intel Trusted Execution Technology (Intel TXT), which provides tamper detection of the hypervisor, preventing applications running on a compromised machine.

One of the new features is asset tagging that enables workload geo-tagging in order to restrict workloads to run in a particular location for security reasons.

XenServer supports NVIDIA GRID vGPU technology and delivers 50 percent increase in server density for delivering high-end 3D graphics applications in virtual desktops.

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50 percent of XenDesktop deployments are run on XenServer. Main benefits to enterprise and service provider customers include increased operational agility and flexibility by delivering new and existing workloads in greater quantities.

The company said 64-bit kernel architecture has resulted in improvements in networking and storage performance. Citrix has re-introduced enterprise-class features for workload balancing (WLB) and distributed virtual switch controller (DVSC).


With a 50 percent increase in server density, customers using XenDesktop and XenApp to deliver high-end 3D graphics apps can now achieve a greater density of desktops using XenServer, resulting in reduced costs and improved end-user experience.

KT currently has 3,000 hosts running in its KT public cloud and private cloud IaaS Service – most are operated and managed by Citrix CloudPlatform, which is one of the best Citrix products.

James Oh, head of Cloud Quality Assurance, Korea Telecom, said: The stability and performance of the Citrix XenServer hypervisor has contributed to the growth of our cloud in terms of quality, profitability and competitiveness as an IaaS provider.”

XenServer has helped Northern Arizona University (NAU) virtualize scores of servers that previously ran standalone.

“The flexibility in XenServer to migrate VMs and storage around has virtually obviated the need for system administrators to come in at 3AM to perform maintenance tasks with XenServer allowing us to maintain 99+ percent uptime while keeping normal working hours,” said Tobias J. Kreidl, Academic Computing Team Lead Information Technology Services, Northern Arizona University.