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Over the past decade the trend in infrastructure design has been towards scale-out architectures based on
the x86 processor, where many machines are clustered together in order to create a virtual mainframe. In
this paper we set out to challenge this approach and to demonstrate that modern mainframe technology
represents a viable scale-up alternative to the current vogue for racks filled with blades, looking in particular
at the way organisations can benefit in terms of improved agility, increased reliability and cost savings by
consolidating Oracle databases onto IBM’s zEnterprise and Enterprise Linux Servers (ELS).