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XenServer 7 就是不一樣

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 Gravity Zone 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:

擴展性及效能

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:

• 5x host RAM increase 5TB – more RAM potentially means bigger hosts and more VMs
• 2x host CPUs increase to 288 – increasing CPUs for greater density
• 2x host VBDs (disks) per SR up to 4096
• 8x VM RAM increase to 1.5TB – new VM use cases, such as in-memory databases
• x VM vCPUs increase to 32 – larger VMs to support more CPU intensive applications
• Support for Citrix AppDisks increases VM VBDs to 255

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.

主機管理
The latest XenCenter now includes a button for launching an SSH console session within PuTTY, making things far simpler to bring up a console session with minimal effort.

XenServer Conversion Manager has been updated, and now supports the batch conversions of newer Windows releases (including Windows 10) from the latest VMware vSphere versions (including 6.0) to XenServer. This greatly simplifies the process of moving VMs from vSphere for customers seeking to avoid the vTax and adopt a more cost effective solution.

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 meantime, check out XenServer on the web, upgrade your existing infrastructure to leverage its benefits, and follow @XenServer on Twitter