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The new feature offers greater flexibility. The p660 runs on the AIX 5L operating system, so users can use a pay-as-you-go configuration.
Stephen Way, mid-range director of the Common UK user group, said, "Upgrade on demand is a useful feature. It lets you increase the capacity of the machine if you run into problems." The facility will be particularly useful for companies using their pSeries for Web serving, he added.