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Capacity planning is a process where the minimum server hardware is identified to support the expected
load on the system. The goal of the capacity planning exercise is to deploy a system that can support the
Excel Services’ operations in terms of throughput, response time, and availability of the system. In this
section, the capacity planning discussion focuses specifically on the Excel Services system, and not on
the other services installed by MOSS.
You need to consider a number of factors when addressing capacity planning for Excel Services, including
the number of concurrent users, the number of active sessions, the number of workbooks, and even the
characteristics of the workbooks. The challenge in capacity planning is coming up with the inputs. How
well is the expected Excel Services usage understood? Existing deployed systems may hold answers that
can assist you. For example, there may be Excel workbooks intended for Excel Services in a SharePoint
site or in various file shares.