Can you have virtualization and continuous availability?

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Submitted by Joanne-D | 10/4/2007 9:38pm

I cannot pick up a technology magazine without reading something about virtualization. It is cutting across the entire IT infrastructure — from servers to storage, even clients. Choices must be made, however, with regard to which applications and processes can (or should) be virtualized. The primary factor being: is it a business-critical application? If so, what amount of risk are you willing to take when it comes to availability of those applications?

Comments

Comment by Richard B. | 1/17/2008 9:37pm

Richard B. one of the biggest risks is migrating systems and underestimating the complexities of your product environment. For example, if you take shortcuts in required pre-production testing when your business has little or no tolerance for slow response time or even the briefest of application outages that could become a very visible problem. You definitely want to schedule the cutover to your virtual infrastructure wisely so that migration does not take place during peak times. Don't make overly aggressive assumptions for migrating the systems because it can take anywhere from two to four hours for a professional, however, what requires only a few hours from a technical standpoint may merit weeks of time in a production environment.

Comment by frankL (not verified) | 10/5/2007 8:25pm

None. Because the risks of slow response time, no response, and service interruptions are unacceptable for business-critical services, the IT systems delivering these services have to be assessed, well planned to handle peak utilization and workflows need to be implemented and monitored to proactively prevent losses and keep the critical applications running smoothly and reliably.

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