Vmware Vsphere 5 HA and clustering

Posted on 2012-08-12
Last Modified: 2012-10-10
Hi I am using HA and clustering in vsphare5. I have four esxi 5.0 hosts.

When any one host get fails the virtual machines automatically have moved to other host. But the virtual machine get restart.

I want that virtual machine should not be restart while moving to another host.
What is the way to do it?
Question by:sitg
    LVL 42

    Expert Comment

    HA functionality works where one host fails and the VMs restart on a different host, this is the basis of HA and there only several ways that this can be mitigated:

    1.  Fault Tolerance:  If you configure FT it can run a shadow VM on a different host but has many limitations

    2. Clustering:  Technologies such as Microsoft Clustering can be used to have an system that can keep operating when one of the nodes goes down.  A rule has to be setup so that nodes are not on the same host and shared storage needs to be used
    LVL 33

    Expert Comment

    you can't do that when hosts fails unless you have FT, HA restarts the machines.
    if you are talking about moving the machine you can vmotion or storage vmotion the machines without downtime.
    LVL 117

    Accepted Solution

    This is how VMware HA functions. VMware HA is fucntioining correctly for you. In the event of host failure, the VMs will be restarted automatically on other hosts. This means there will be a few minutes of downtime.

    You could invesiigate Double Take HA, VMware FT or Microsoft Failover Clustering if you have applications, and require high availability.

    Why are you hosts failing? In a good VMware vSphere environment, hosts should not be

    Check the Product Briefs

    VMware High Availability - Decrease Downtime and Reduce Risk

    VMware High Availability (HA) Product Briefs

    VMware vSphere Availability Guide ESX 4.1vSphere

    vSphere Availability Guide

    Expert Comment

    Just repeating the other solutions I know, but seen from an ESX point of view the only solution would be FT. An expensive solutiuon so you should really have the need for it given the robustness of the ESX platform

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