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ISC is a distributed, globally accessible fabric of resources for highly scalable and efficiently managed solutions.
From the datacenter perspective, Utility Computing promises higher utilization, improved application management and greater flexibility to satisfy demand. This is achieved by abstracting away the physical layout of the datacenter and creating a logical partitioning of resources which can dynamically be allocated where needed. Figure 2 illustrates the flow of events as they are generated from within the datacenter (bottom center). Resources within the datacenter are continually monitored, the events are analyzed and resources are allocated or de-allocated in real time on an as needed basis.
Datacenter resources are monitored at multiple levels. These resources may include physical (hardware), virtual (servers) or any combination thereof (virtual network topologies). Monitoring levels range from health and availability to service level agreements (SLAs). Resource monitoring also spans mulitple levels, ranging from individual resources (largely health and availability) to soution level (largely SLA-level). These concepts and others are discussed in greater detail elsewhere in this paper.
While the event cycle illustrated above is largely reactive, the storage of datacenter events enables discovery of longer term usage patterns (or complex events), enabling opportunistic (proactive) forecasting. Opportunistic forecasting enables ISC solutions to provision resources in anticipation of expected demand, based upon the identification of usage patterns. For example, an online retailer may define a time-based usage pattern which enables additional resources to be allocated in advance of popular shopping holidays like Christmas. Usage patterns can also enable the gradual de-allocation of resources as service demands degrade. Opportunistic forecasting enables higher datacenter utilization rates since resources are proactively managed based upon both real-time and historical usage data.
More from a draft... A Definition for Internet Scale Computing ISC is a distributed , globally accessible