Whitepaper: VMware VMotion Performances on the DELL PowerEdge 1855 Blade

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日本語

Whitepaper: VMware VMotion Performances on the DELL PowerEdge 1855 Blade

Posted by Alessandro Perilli | Saturday, January 07, 2006 | 2 Comments

DELL released this nice whitepaper about a (still) very niche VMware VirtualCenter feature: VMotion.

... The VMotion migration of running VMs from one ESX Server host to another is especially useful in enterprise data centers. The scenarios where VMotion is utilized include dynamic load balancing of VMs across an ESX Server farm; graceful failover of VMs off a failing ESX Server host; and movement of VMs off an ESX Server host to bring that host down for routine maintenance. In all cases it is desirable that any performance impact due to VMotion be negligible as seen by the end user running applications on the VMs. ... The purpose of this study is to quantify the impact on typical VMware operations of having two network connections available for each ESX Server host running on a set of PowerEdge 1855 blades...

Download the whitepaper here. Thanks to VMTN Blog for the news.

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2 Comments

Fraser Campbell Sunday, January 08, 2006 5:33:00 PM

Alessandro, interesting paper.

I am curious about one thing, you suggest that vmotion is still a niche feature. Do you have any idea why (cost, performance, stability, ???)?

I am curious because I am currently doing extensive testing/design around the Xen hypervisor and in my mind live migration is an absolutely critical feature of any virtualization solution (in any large scale production deployment).

Thanks

Alessandro Sunday, January 08, 2006 5:57:00 PM

Hi Fraser,
thanks for commenting!

I said VMotion is still a niche feature for various reasons:

1) few companies are using VMware Virtual Infrastructure in mission critical environments so that they feel the need of VMotion.

2) hardware requirements.
You know how much demanding VMotion is for achieving good performances.

3) not widely known.
People ignore it exists.
VMware is actually having difficulties advertising some technologies. VMotion and VMware ACE are good examples.

4) maturity.
Too early to trust the technology.
Such a thing requires from 3 to 5 years to be even considered.

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