Finadmin virtualization2
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Virtualization allows multiple virtual machines to run on a single physical server by sharing resources. The Xen Cloud Platform is an open source virtualization and cloud computing platform based on the Xen hypervisor. It provides virtual machine support, management tools, networking, and storage support in a single installable image. Xen has advantages over other hypervisors like VMware including its thin hypervisor model, security through isolation of guest machines, and widespread use in cloud computing environments. Virtualization reduces hardware costs by consolidating servers and allows faster reconfiguration of resources between virtual machines. Migrating virtual machines between physical hosts with pooled storage allows load balancing and host maintenance. Remaining challenges include network throughput bottlenecks and disaster planning.
![introduction &
Overview
Virtualization allows one very powerful physical machine to
host many smaller machines by sharing hardware, memory and
processors.
The Xen Cloud Platform (XCP) is an open source enterprise-
ready server virtualization and cloud computing platform,
delivering the Xen ¹Hypervisor with support for a range of
guest operating systems including Windows® and Linux®
network and storage support, management tools in a single,
tested installable image, which is also called XCP appliance.
¹hypervisor [ʹ′hī·pər‚vīz·ər] One of many hardware virtualization techniques
that allow multiple operating systems, termed guests, to run concurrently on a host
computer. It is so named because it is conceptually one level higher than a supervisory
program. The hypervisor presents to the guest operating systems a virtual operating
platform and manages the execution of the guest operating systems.](https://image.slidesharecdn.com/finadminvirtualization2-120806120002-phpapp02/85/Finadmin-virtualization2-2-320.jpg)
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Finadmin virtualization2
- 1. Virtualization C o m p t r o l l e r s a r e a
- 2. introduction & Overview Virtualization allows one very powerful physical machine to host many smaller machines by sharing hardware, memory and processors. The Xen Cloud Platform (XCP) is an open source enterprise- ready server virtualization and cloud computing platform, delivering the Xen ¹Hypervisor with support for a range of guest operating systems including Windows® and Linux® network and storage support, management tools in a single, tested installable image, which is also called XCP appliance. ¹hypervisor [ʹ′hī·pər‚vīz·ər] One of many hardware virtualization techniques that allow multiple operating systems, termed guests, to run concurrently on a host computer. It is so named because it is conceptually one level higher than a supervisory program. The hypervisor presents to the guest operating systems a virtual operating platform and manages the execution of the guest operating systems.
- 3. Why Xen? Xen compared to VMware ESXi, Hyper-V, and KVM Xen has a “thin hypervisor” model (2 MB executable) Security: every guest machine is isolated from other guest machines with no way to access each other's memory or networking connections The Xen hypervisor is the most used virtualization platform in the cloud computing space. With leading vendors such as Amazon, Cloud.com, GoGrid, and Rackspace all using Xen, the community is able to ensure that their scalability and performance needs are met. In fact, the largest virtualization deployments in the world are primarily running the Xen hypervisor in a cloud computing environment. To better support these cloud providers, the Xen.org community created a new project in 2009, Xen Cloud Platform. The Xen hypervisor is currently available in solutions from Avaya, Cisco, Citrix, Fujitsu, Lenovo, Novell, Oracle, Samsung, VALinux, and others. Free, as opposed to VMware’s $5,000 per host server license
- 4. Old Technology Servers are expensive to purchase and have to be replaced in a relatively short cycle usually between three to five years. Going “Virtual” won’t change the need for hardware refreshes, but there will be fewer physical machines to purchase and maintain, and thus lower cost. Physical hardware is often limited in expansion capability and expensive to reconfigure even when possible.
- 5. New Technology vhost1 Physical Host Server
- 6. New Technology A robust physical host allows for flexibility in storage, memory and processors when configuring virtual machines. Sharing processors, memory and storage also allows faster reconfiguration of virtual hardware when you need more processing vhost1 power or storage. Physical Host Server
- 7. New Technology FA7- Oracle FA1 - HelpDesk Virtual Machines Qlik1- QlikView Chatterbox- Secure Chat Imagex - SCCM FAD5 - Symantec vhost1 Physical Host Server
- 8. Virtual Machines Virtual Machines Network Architecture vhost1 Network Switch vhost2 iscsi Storage Array
- 9. Virtual Machines Virtual Machines Network Architecture vhost1 Network Switch vhost2 iscsi Storage Array
- 10. VM migration between hosts vhost1 vhost2 Network Switch iscsi Storage Array
- 11. VM migration between hosts With pooled storage, moving machines with running processes between hosts is possible. vhost1 vhost2 Network Switch iscsi Storage Array
- 12. VM migration between hosts A virtual machine can be migrated from a busy host to a host that’s not under as much load. This feature also allows maintenance to be done on vacated host after the virtual machines are moved onto another host. With pooled storage, moving machines with running processes between hosts is possible. vhost1 vhost2 Network Switch iscsi Storage Array
- 14. Xen Cloud Platform - Command Line Interface
- 15. Remaining Obstacles Slow Network throughput Available ports in our machine room are 100Mb and this will cause a bottleneck when more than one vm server has higher than average traffic. If we can get some Gigabit Ethernet connections to our server room, this problem should go away. Disaster Planning If we can get the Gigabit Ethernet and some routing assistance from ITS, this will allow us to place one of our host servers in the new ITS data center on Ivy Road. This host has an additional 8 Terabytes of onboard storage that can be used as a Snapshot repository and backup space.
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