What is Sizing in XI ? How to do ? What is the Use ?

Hi All
      I am learning XI ...it is excellent tool...more interesting
      My Question is what is sizing in XI ? How to that ? What are the advantages?
      How to decide weather that project need sizing or not ?
     More inputs on this pl.....i searched in SDN but not full information
Awaiting for valuable responses
regards
Kiranlvs

HI,
The key information for sizing is the number and the size of messages the Integration Engine has to process in a given scenario.
The sizing model is based on the following preconditions:
- We only consider direct communication. Possible local proxy servers tunneling messages to and from the Integration Servers are not considered.
- We assume that data is persisted twice, once for each of two asynchronous steps (the data is initially persisted after it is received and then again after processing). If data is persisted more than twice (for example, for debugging purposes), more disk space will be required.
- The measurements are calculated against an average CPU consumption of 70% (see the general sizing procedure at SAP1).
- The sizing guidelines do not include additional requirements caused by data archiving, data deletion or reorganization.
- Sizing is for SAP Web Application Server 6.40.
- Processing by the Adapter Framework is taken into account.
See below links
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/72e2bb90-0301-0010-e883-c390ad8a975a
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/150ac490-0201-0010-0cb3-dee8d5262778
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/b4f3755a-0401-0010-b6b3-9b65bb7d4503
Quick Sizer (http://service.sap.com/quicksizing). The sizing guidelines include an initial and an advanced sizing based on different possible scenario definitions.
All you need to create a sizing project is a valid SAP customer number and access to the Service Marketplace
Regards
Chilla..

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