ptg6432687
SAP Implementation Unleashed
xvi
Sizing the Installation. ...............................................................................372
SAP QuickSizer ...................................................................................372
Limitations of the QuickSizer Approach...........................................373
The Questionnaire .............................................................................374
Obtaining Vendor SAP Sizing Questionnaires. ..........................................375
Using SAPS Values .............................................................................376
CPU, Memory, Disk I/O, and Networking Performance...................377
Operating Systems . ...........................................................................377
Database Versions . ............................................................................378
Fostering Apples-to-Apples Sizings....................................................378
Production System Sizing Rules of Thumb ................................................379
Understanding Different Sizing Methodologies. .......................................380
New Instance Sizing ..........................................................................381
Post-Go-Live Resizing . ......................................................................381
Predictive Modeling for Precision Sizing ..........................................382
Summary .....................................................................................................383
Case Study: Resizing at a Subsidiary...........................................................383
19 Conducting the SAP Platform Sizing Process
385
Analyzing System Requirements ................................................................385
The Requirements Document and Supplementing with SAP QuickSizer..386
The Requirements and Sizing Review Team...............................................387
Management, SAP Architecture, and Functional Needs ...................387
Third-Party Software. ........................................................................388
Database and SAP Basis Administration . .........................................388
Data Center and Systems Administration. .......................................389
Help Desk Factors . ............................................................................390
Team Factors and Representation. ....................................................390
RFPs, Vendor Questionnaires, and More. ..................................................390
Sending Out Requests for Proposal ...................................................391
The Vendor Questionnaire . ..............................................................391
Presizing Conference Call. ................................................................392
The Vendor-Driven Sizing Approach ................................................393
The Sizing Proposal Review Process . .........................................................395
Conducting a Detailed Sizing Review ...............................................396
Verifying SAP Support for Architected Solutions ..............................396
Verifying the Risk of the Proposed Solution .....................................397
Verifying SAP Production References ................................................397
Revising Total Cost of Ownership Numbers .....................................398
Selecting Core SAP Technology Stack Partners .................................398
Evaluating Specialized Technology Stack Vendors ...........................399
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