Re: VMotion as failover solution

  • From: LS Cheng <exriscer@xxxxxxxxx>
  • To: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
  • Date: Wed, 14 Dec 2011 07:32:30 +0100

Hi
Thanks for sgarng the experience.

So far I see two points with vMotion:


   1. *Hardware failure such as server brown out or network problems,
   automatic failover is possible*
   2. *Database/instance failure there is no automatic failover since
   VMWare does not detect application failures*


Am I correct?

TIA

--
LSC


On Tue, Dec 13, 2011 at 6:45 PM, Allen, Brandon
<Brandon.Allen@xxxxxxxxxxx>wrote:

> We are using VMware (with VMotion) to provide HA for a cluster of Oracle
> databases and application servers running on Linux and it works very well,
> but Paul is right that it doesn't provide automatic failover.  This
> environment can tolerate the few minutes of downtime that would be required
> to restart the virtual host on another physical host and then have users
> reconnect.
>
> I just skimmed the document Paul linked to below and apparently they offer
> a higher level of HA called "VMWare Fault Tolerance" that will provide
> faster, automated failover functionality but I don't have any experience
> with that.
>
> Regards,
> Brandon
>


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