On 7/24/07, Eugene Teo <[EMAIL PROTECTED]> wrote:
You can consolidiate resources, and at the same time provide redundancy. Say, you consolidated 5 machines into 1 machine with 5 guests vm. You can also setup another machine with the same 5 guests, and cluster it. This way, you can still consolidate resources by using less hardware, and still get to cluster them the same way you would do with more hardware. Some virtualization technologies even allow you to migrate a guest vm from one possibly broken hardware to another without shutting down.
IMOHO, there's too much hype and misconception(from my point of view) on adopting virtulisation as the technology in consolidation. I wouldn't consider migrating from physical hardware into virtual machines (in any virtulisation platform) as consolidation. I would rather coined it as hardware efficiency utilization. :-) The steps most companies is trying to adopt when using virtualisation platforms. Applications owners hostings on the physical servers should profile their apps and see if they can consolidate them on a single hardware in the first place then just requesting for new servers each time they want to host a new app. I think the SPOF concern is valid. When you put many eggs into a single basket, the chances of them all broken at the same time is high. If cost is of no concern, adding HA solutions to the virtulisation infra would be needed. I am rather interested to know if anyone else also face the concern on SPOF in VM infra, and how it's being addressed, beside HA solutions. -- Best Regards, Leslie Joshua Wang "The good thing about standard, there are so many of them to chose from ..." availability, performance and cost - pick 2
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