Migrate Virtual Machines
Using Storage XenMotion, a running virtual machine can be moved from one server to another server in the same resource pool with virtually no service interruption. The choice of destination server depends on how the VM and the pool are configured: in a pool with Workload Balancing (WLB) enabled, for example, recommendations are provided to help select the best possible physical server for the VM’s workload. For more information, see Choosing an Optimal Server for VM Initial Placement, Migrate, and Resume.
When we are talking about setting up networks and configure them we need to understand how they are named. XenServer knows 3 types of objects, the physical network interface, the virtual one and the network itself.
PIF: This is the object name for a physical network interface. XenServer is based on linux. This means each physical network interface will get the normal linux name ethX. XenServer will create a PIF object and assigned to each ethX device.
XenServer Tools provides high performance Windows drivers and a management agent, enhancing disk and network performance for XenServer VMs. For more information, see XenServer PV drivers – XenServer Tools.
XenServer Tools must be installed for each virtual machine (Windows and Linux) in order to be able to use the xe CLI or XenCenter, and VM performance will be significantly lowered unless the tools are installed. Without the tools installed, you will not be able to do any the following:
General information which we should remember in xenserver are pointed here:
Xenserver is paravirtualized hypervisor. Hence, it needs Intel-VT or AMD-V to be enabled. MTU, Short for Maximum Transmission Unit, the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent. Open vSwitch combined with Distributed vSwitch Controller gives you more features. We want to delete the snapshots of an existing VM, but not the original VM, we right click on the VM and choose Delete VM.
Resource Pool:
A Resource Pool comprises multiple XenServer Host installations, bound together into a single managed entity which can host Virtual Machines. When combined with shared storage, a Resource Pool enables VMs to be started on any XenServer Host which has sufficient memory and then dynamically moved between XenServer Hosts while running with minimal downtime (XenMotion). If an individual XenServer Host suffers a hardware failure, then the Administrator can restart the failed VMs on another XenServer Host in the same Resource Pool.
If you are unsure if your license server version is current, you can verify it by comparing your version with the number on the Downloads site.
On a license server with the License Administration Console:
Start the License Administration Console from the programs menu: Citrix > Management Consoles > License Administration Console. Click Administration and select the System Information tab. See the release version in the information list. On a license server without the License Administration Console:
Introduced Citrix XenApp 6 April 2010
Introducing XenApp 6 • The de facto standard for on-demand app delivery to any desktop • Work from anywhere on any device from PC to Mac, smartphone to netbook • Self-service storefront for apps, desktops and IT services • Hi-def experience for rich multi-media applications over any network • Purpose built for Microsoft WS08 R2 for advanced management and scalability XenApp 6 themes Any device, Self-service RealTime Single anywhere apps and management Plug-n-Play console XenApp 6 key features • Receiver for • Dazzle self-service • HDX RealTime • Built for WS08 R2 Windows, MAC storefront for PC collaboration for & Linux and Mac OCS and VoIP • Simple, fast product softphones installation • Smartphone support • App-V integration • iPhone 2.
XenApp 6 brings a host of features and benefits that most companies will need as the technology continues to evolve, and user requirements continue to expand. These features and benefits include:
Simplified Installation Single Management Console Worker Groups Policies and GPO Integration Merchandizing Server and Dazzle HDX Provisioning Server Simplified Installation
With introduction of XenApp 6, Citrix introduced a number of enhancements to the installation wizard. Borrow-ing from Microsoft’s “Manage your Server” and roles concepts, Citrix adopted a similar process for installing XenApp.
Can you run the chfarm command on a XenApp 6 server?
No. In previous versions of XenApp, you could run the chfarm command to remove and add a server to a farm. This command is no longer a valid method.
The following components enable you to can add a server to a farm or remove a server from a farm:
By using the Delivery Services Console Delivery Services Console Note: Using the Delivery Services Console only removes the server from farm so that it is not visible in the console.
Preferential Load Balancing assigns importance levels (Low, Normal, or High) to specific users and applications. For example, doctors and nurses in a hospital are specified as important users and MRI scans and X-rays are specified as important applications. These important users and applications with higher levels of service connect to their sessions more quickly and have more computing resources available to them. By default, a Normal level of service is assigned to all users and applications.
