Today, offerings such as Amazon Web Services' Elastic Compute Cloud (EC2) are providing a new model for on demand compute resources based on virtual machines. Virtual appliances are a natural deployment vehicle for this type of infrastructure, allowing a clean separation between the memory, compute, and storage resources managed by the appliance provider and the complete software stack managed by the end user. Virtual appliances also allow a simple transition from internal virtualization clusters to outsourced providers, enabling capacity spikes to be handled. rlebherz wrote: Alf,
Interesting article. I think the Cloud services and cloud infrastructure lines are a bit blurred, but I agree with most of what you are saying.
Dont underestimate the SLA's role in accountability. For companies that have dynamic requirements and no down time can be afforded, make sure you have very tight SLAs. For example, OpSource provides a 100% SLA in the cloud and 100%SLA around production application environments. Now 100% is ideally perfect, it comes down to accountability, yo...
Nov. 20, 2009 03:42 PM EST
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