This article got me thinking about what we mean when we talk about workload.
Private enterprises have adopted some kinds of virtualization, but
UCS allows them to converge server, computer and network virtualization
into a single layer. That, in turn, boosts manageability of the
application workload. “The ability to know that your workload can
choose from a very large pool of resources to run on is a very critical
element,” said Urquhart. VMware’s Herrod agreed that this kind of
deeper level of virtualization, which further separates the logical
view of a process from its physical implementation, makes it easier for
companies to innovate. Urquhart stressed, though, that UCS isn’t just
about virtualization — it is about a way to leverage fixed components
in a very dynamic way.
Dynamic management of workloads, ultimately, was another reason many
of the panelists agreed private clouds have emerged, and systems that
enable companies to implement workloads based on actual needs will be
important. Hollis of EMC said companies need to create use cases for
each workload — do it all at the server layer, or all in the network,
or in some cases leveraging a homogenous storage array. “You ought to
be having a discussion about the functionality and less about where in
the stack it happens,” he said.
We need to think of what's the right service definition abstraction that can drive the policy layer which defines how to provision and change a workload.
Pragmatically, this means that we need to bring in a marketing layer to our offerings so that users know, in their language what IT provides. For example, a "document collaboration site for vendos" This then translates into, "Linux, Apache, Document Management, SQL, etc", which gets further decomposed into configuration information like "need to write new rule for firewall, need to provision VPN."
These three layers need a sort of service lifecycle manager and service catalog to keep them coherent.
More another time.
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