Citrix Blogs

XenServer 7 Has Landed!

Marc Trouard-Riolle

It’s day one of Citrix Synergy 2016, and what a great day it is for the XenServer product group! If you haven’t heard by now (check out Steve Wilson’s post), we just launched our most significant release ever: XenServer 7!

In this post, I want to give you a little insight into the key themes, features and product enhancements that are are going to benefit Citrix customers, whether they are using XenServer for traditional server virtualization, or application and desktop virtualization with XenApp and XenDesktop.

Enhanced graphics leadership

Since May 2013, when Citrix introduced NVDIA GRID vGPU integration to an eager Synergy audience, XenServer has led the field in hypervisor-based virtualized graphics.

In XenServer 7, Citrix extends support for NVIDIA GRID, to include the M6 & M60 GPUs, also increasing the number of vGPU sessions per host to 128. Add to this the introduction of GRID vGPU support for RHEL, OEL, CentOS and Ubuntu Linux desktops, and you have a flexible platform for either Windows or Linux-based, graphics intensive applications. This opens up new opportunities for our customers to virtualize Linux applications that have traditionally been desktop or workstation bound, centralizing them securely within the datacenter and benefiting from shared infrastructure to be used on cheaper, commodity end-user devices, PCs, tablets.

XenServer 7.0 with the NVIDIA TESLA M10 supports up to 128 NVIDIA GRID vGPU-enabled VMs (a 33% increase on XenServer 6.5), enabling the highest density deployments of GPU-accelerated applications across the enterprise for knowledge workers, and with the TESLA M60/M6, it supports the most graphics demanding CAD users – with no compromise in performance,” says John Fanelli, VP Product for NVIDIA GRID. “With GRID software, Citrix customers benefit from twice yearly updates to ensure they always have access to the latest innovations and improvements. Support for Linux brings the benefits of virtualization to an entirely new customers in industries such as oil and gas, media and entertainment, and aerospace and defense.

XenServer 7 also sees the introduction of a new GPU vendor. Following close collaboration with Intel, XenServer is the first hypervisor platform to support Intel’s virtualized graphics, GVT-g, which is based on the Iris Pro Graphics chipset. So, you might be asking, “Why is this so interesting?” For a start, the GPU is embedded within the CPU socket, requiring no additional hardware. Presently, it’s based on Broadwell CPUs (Xeon E3 v4), and is able to run up to 7 GPU sessions per CPU socket.

This creates a very low barrier to entry for businesses seeking to leverage enhanced graphics benefits via XenApp or XenDesktop. Learn more about GVT-g from Intel here.

Microsoft Technology integration

Citrix has a long history of integrating with, and supporting Microsoft operating systems and infrastructure products, and XenServer 7 is no exception.

Revolutionary Security

Infrastructure security is always a challenge, and whether it’s protection from viruses, malware or hackers, there are a variety of tools and methods used by security vendors to help businesses protect their IT infrastructures from the variety of tools and methods used by the people with malicious intent. A big challenge is how malware and hackers get around, disable, or hide themselves from existing security solutions.

If someone can leverage a software vulnerability to gain access to a system, they tend to work their way up the security chain, seeking to get the highest level of system privileges from where they can disable security software and do the most damage or gain access to the most sensitive data.

XenServer 7 is different.

Working closely with Bitdefender, Citrix is proud to announce XenServer Direct Inspect APIs, which allow integration from third party security software companies to leverage hypervisor memory introspection (HVMI). This uses a privileged security appliance (SVA), one per-host to inspect the memory of VMs running on the host. As introspection is happening from outside the guest VM, there are no agents required within the VMs, and as such, nothing for a virus, piece of malware or hacker to disable within the VM. Should anyone also hack into a VM OS, they would also only be able to see within the boundaries of that VM container, and be completely unaware that a host-based SVA could be monitoring and blocking their activity; we call this “better than physical” protection.

Security products based on virus or malware signatures protect you from known risks, however what about day-zero attacks? How do you protect yourself against something for which there is no known signature? Bitdefender’s integration goes beyond the standard signature checking, by examining the techniques used by viruses or malware rather than their signatures, enabling protection of systems against day-zero attacks.

This solution isn’t targeted at replacing all disk based scanning protection, as the Direct Inspect APIs feature is a memory based solution, yet it extends protection through either a kernel-mode or user-mode (for specific applications), providing protection against a variety of security threats, including existing security products from being disabled. As such it complements existing disk based protection solutions. Find out more from Bitdefender on this blog and data sheet.

XenServer Direct Inspect APIs with Bitdefender GravityZone is a first and unique security feature for commercial hypervisors.

XenServer Management, Scalability and Performance

XenServer Health Check

If you’re a XenServer customer and you’ve ever spoken to Citrix Support, you will be familiar with Server Status Reports. With XenServer Health Check, we wanted to take the traditional tactical support process in a new direction, enabling proactive support of virtualized infrastructures.

It’s a simple approach; provide a mechanism that allows for regular infrastructure report uploads to Citrix Insight Services (CIS), perform analysis of the reports within the CIS cloud, then report back to the XenServer infrastructure on findings. With integration to CIS, this is an opt-in feature, whereby enrollment requires the appropriate host/pool & CIS credentials. The IT admin also defines the frequency (default is 2 weeks), the time and day of the week for the uploads.

Once the initial report for a given resource pool has been uploaded and analyzed, the resulting notifications are immediately available from XenCenter, with further information and reports available via a link to CIS:

Scalability and Performance

If you’ve ever heard me present, I will likely have uttered words similar to “we’ve scaled up” or “we have better performance”. Well I don’t like to disappoint, so guess what? We have scaled up and have better performance in XenServer 7 than any other previous release:

XenServer now also supports cgroups, something I hope that the Linux gurus amongst us would nod approvingly at, as these ensure that core processes running within dom0 have sufficient resource. This ensures that IT admins can still administer their hosts even when they’re under extreme load.

Host Management

This isn’t everything included within XenServer 7, and I haven’t gone into sufficient detail to provide you everything you need to know about the features listed, however hopefully this overview will wet your appetite for more. Keep your eyes and ears open to further product and feature announcements coming soon, and in the mean time, check out XenServer on the web, upgrade your existing infrastructure to leverage its benefits, and follow @XenServer on Twitter.

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