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Environment Explanation

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  • Environment Explanation

    Can someone give a good explanation for what vmotion and virtual center is? I understand vmotion as just moving a virtual pc from one host to another withing vmware and virtual center as the gui in which you view all your virtual machines - can someone give a further detailed explanation of these? Thanks in Advance!

  • #2
    Re: Environment Explanation

    Did you try

    If you want more info then David is your man!!

    Michael Armstrong
    MCITP: EA, MCTS, MCSE 2003, MCSA 2003: Messaging, CCA, VCP 3.5, 4, 5, VCAP5-DCD, VCAP5-DCA, ITIL, MCP, PGP Certified Technician

    ** Remember to give credit where credit is due and leave reputation points sigpic where appropriate **


    • #3
      Re: Environment Explanation

      Virtual Center is VMWare ESX's management console. It allows you to have a single pane of glass to view all of your ESX managed Virtual Machines. It shows the VMs status, the current Performance of the VMs and ESX server, and allows you to Console in to any VM.

      VMotion is an addin to Virtual Center. It requires that your ESX servers be SAN connected and that they see the same SAN LUNS. VMotion allows you to move RUNNING VMs from one ESX server to another with little or no perceived dowtime. Since the VM files are encapsulated in a large file or 2 and VMotion doesn't actually move them, all VMotion needs to do is copy what is in memory and the small VM config file to the new server. One of the big benefits to VMotion is that you can move VMs in production if you want to change the utlization of an underlying ESX host. For example, an Exchange VM has an additional 100 users migrated to it. It now is starting to compete for vCPU resources, you can move it to another ESX host that has the additional vCPU needed.

      VMotion is also the core component that allows Virtual Infrastructure 3 to have the DRS feature. This feature allows you to setup ESX servers in pools. Then all you need to do is assign a VM to a pool and it can place the new VM on the appropriate physical server in the pool. But more importantly, it can dynamically move VMs based up performance. DRS can be setup with rules to prevent automatic moving of VMs. Instead it can be used to make recommendations on moves that you can accept or deny.