VMware and HA solutions

Michele Donna michele.donna at arxis.it
Mon Mar 10 10:35:23 MET 2008


Hi,

What I'm trying to understand is if we can manage SAP
instances simply using VMware HA tools or if we have to use
another layer of ha software just for SAP.

If VMware HA can provide a sort of Business continuity
solution that's fine for us.. 


thanks and regards,
Michele

----- Original Message -----
Da : "Euler, Christian" <euler at aov.de>
A : <linux.general at listserv.sap.com>
Oggetto : RE: VMware and HA solutions
Data : Mon, 10 Mar 2008 08:58:56 +0100

> Hi,
> 
> ESX is capable of migrating virtual machines on the fly
> between two hosts. I'm not sure if a guest system is able
> to trigger a migration itself (by using the vmware tools
> for example), or if you need an external solution for such
> a HA setup. 
> 
> There's no downtime and your users won't notice the switch
> , because the migration process creates a shadow instance
> of the running guest in the target system and then only
> needs a few seconds to switch over network connection etc.
> 
> If you're using SLES10, the combination of Xen and
> Linux-HA could be a another solution for a clustered
> setup. We're currently evaluating this, and it seems that
> Xen causes less overhead than VMWare.
> 
> Regards,
> Christian Euler
>  
> AOV IT.Services GmbH
> Bartholomäusweg 32
> 33334 Gütersloh
> Tel. +49 (5241) 9463-101
> Fax +49 (5241) 9463-55
> eMail euler at aov.de
> http://www.aov.de
> 
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>  
> 
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> is not necessarily a good idea. It is hard to be sure
> where they are going to land, and it could be dangerous
> sitting under them as they fly overhead." (RFC 1925)
>  
> 
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