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Adaptive Hardware Infrastructures for SAP

Adaptive Hardware Infrastructures for SAP


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About the Book

Constantly changing business processes pose a critical challenge for today's hardware. In order to conquer this challenge, companies must respond quickly and in a cost-effective manner, without risking the future safety of their infrastructure. This unique new book helps you to understand the most important factors for determining what hardware you'll need to support flexible software systems in the months and years ahead. Plus, discover the ins and outs of exactly how SAP systems support your business processes. In addition, you'll benefit from highly-detailed insights, essential for helping you calculate your true Total Cost of Ownership (TCO). Highlights include: - Sizing: SAP NetWeaver components, mySAP solutions, Bandwidth, Memory, Hard disks - System platforms: Processors, Memory, I/O, Blades, Operating systems, Databases - Data storage: Subsystems, File systems, Caches, Archiving, and much more - High Availability: Hardware, Operating system, Failover, Clusters, Backup & Recovery - Presentation and Output - Networks: LAN, WAN, Bandwidth, Architectures, Security, High Availability - SAP Adaptive Computing Controller - TCO and ITSAM

Table of Contents:
Foreword ... 13 Introduction ... 17 1. SAP NetWeaver ... 23 ... 1.1 The SAP Product Portfolio ... 24 ... 1.2 The Components of SAP NetWeaver ... 26 ... 1.3 SAP Enterprise Portal ... 27 ... 1.4 SAP Mobile Infrastructure ... 32 ... 1.5 SAP Business Intelligence ... 34 ... 1.6 SAP Knowledge Warehouse ... 40 ... 1.7 SAP Master Data Management ... 42 ... 1.8 SAP Exchange Infrastructure ... 45 ... 1.9 SAP NetWeaver Development Environment ... 50 ... 1.10 SAP Solution Manager ... 54 ... 1.11 User and Authorization Management ... 57 ... 1.12 Summary ... 59 2. mySAP Business Applications ... 61 ... 2.1 mySAP ERP ... 62 ... 2.2 Industry Solutions ... 71 ... 2.3 mySAP Customer Relationship Management ... 72 ... 2.4 mySAP Supply Chain Management ... 79 ... 2.5 mySAP Supplier Relationship Management ... 85 ... 2.6 mySAP Product Lifecycle Management ... 87 ... 2.7 An Example of SAP xApps: SAP Global Trade Services ... 91 ... 2.8 Solutions for Small and Midsize Enterprises ... 92 ... 2.9 Summary ... 92 3. SAP Web Application Server ... 95 ... 3.1 The Classic SAP Architecture ... 96 ... 3.2 The Anatomy of the Web AS ... 97 ... 3.3 Internationalization ... 106 ... 3.4 SAP System Landscapes ... 111 ... 3.5 Grid Computing ... 115 ... 3.6 Summary ... 117 4. System Dimensioning and Service Level Agreements ... 119 ... 4.1 The Meaning of Service Level Agreements ... 120 ... 4.2 User-Based Sizing ... 123 ... 4.3 Transaction-Based Sizing ... 124 ... 4.4 The Limits of the Sizing Process ... 127 ... 4.5 Response Time ... 129 ... 4.6 Main Memory Requirement ... 132 ... 4.7 Hard Disk Capacity ... 135 ... 4.8 Units of Measure for Application Load and System Throughput ... 136 ... 4.9 Sizing SAP NetWeaver Systems ... 138 ... 4.10 Sizing mySAP Solutions ... 143 ... 4.11 Deciding on the Server Configuration ... 147 ... 4.12 Guaranteed Performance? ... 150 ... 4.13 How Reliable Is Sizing? ... 152 ... 4.14 Summary ... 157 5. SAP System Platforms ... 159 ... 5.1 Computer Technologies for mySAP ... 160 ... 5.2 Processor Architectures ... 161 ... 5.3 Main Memory Architectures ... 165 ... 5.4 Error-Tolerant Memory ... 167 ... 5.5 The System Bus ... 168 ... 5.6 I/O Architectures ... 171 ... 5.7 Blade Servers ... 172 ... 5.8 Operating Systems for mySAP ... 173 ... 5.9 Databases for mySAP ... 179 ... 5.10 System Performance and Scalability ... 180 ... 5.11 Memory Addressing ... 183 ... 5.12 Summary ... 187 6. Data Storage for SAP Systems ... 189 ... 6.1 The Files of an SAP System ... 189 ... 6.2 Read/Write Accesses from the Application Perspective ... 193 ... 6.3 Read/Write Performance from the Physical Perspective ... 194 ... 6.4 Availability from a Data Perspective ... 196 ... 6.5 File Systems ... 203 ... 6.6 Disk Array Caches ... 204 ... 6.7 Data Replication ... 206 ... 6.8 Connection Technologies for Disk Subsystems ... 208 ... 6.9 Sizing Storage Subsystems ... 214 ... 6.10 Structuring Storage Subsystems ... 220 ... 6.11 The Other SAP Servers ... 228 ... 6.12 Consolidating Storage Subsystems ... 230 ... 6.13 Data Archiving ... 231 ... 6.14 Summary ... 234 7. High Availability SAP Systems ... 235 ... 7.1 Downtimes ... 236 ... 7.2 What Is Availability? ... 237 ... 7.3 What Level of Availability Is Required? ... 238 ... 7.4 How Much Performance Is Necessary in an Emergency? ... 240 ... 7.5 What Level of Stability Is Required? ... 241 ... 7.6 Avoiding Downtime ... 243 ... 7.7 Components of High Availability ... 244 ... 7.8 The Proper Environment ... 246 ... 7.9 Hardware Infrastructure ... 248 ... 7.10 Operating Systems ... 251 ... 7.11 Failover Systems ... 254 ... 7.12 SAP Cluster Configurations ... 259 ... 7.13 Cluster Consistency ... 266 ... 7.14 Data Backup ... 270 ... 7.15 Backup/Restore and Recovery ... 274 ... 7.16 Application ... 282 ... 7.17 System Operation ... 285 ... 7.18 Summary ... 286 8. Presentation Layer and Output Management ... 289 ... 8.1 Frontend The User Interface ... 289 ... 8.2 The Future Web Dynpro ... 293 ... 8.3 Mobilization Online and Offline ... 297 ... 8.4 Output for mySAP ... 298 ... 8.5 Summary ... 309 9. Network Requirements for SAP ... 311 ... 9.1 The Influence of the Network on Performance ... 312 ... 9.2 Network Influence on Costs ... 318 ... 9.3 Network Load Caused by Different SAP Applications ... 323 ... 9.4 Estimating the Required Bandwidth ... 327 ... 9.5 Network Influence on Availability ... 336 ... 9.6 Summary ... 338 10. Logical Network Architectures and Network Security ... 341 ... 10.1 Logical Network Structures ... 342 ... 10.2 Load Balancing and Availability ... 352 ... 10.3 Security Aspects ... 358 ... 10.4 Summary ... 365 11. Local Area Network Solutions ... 367 ... 11.1 High Availability for Local Networks ... 368 ... 11.2 Wires and Fibers ... 375 ... 11.3 Potential Equalization, Grounding, and Lightning Protection ... 381 ... 11.4 Wireless Networks ... 383 ... 11.5 Voice Data Convergence ... 392 ... 11.6 Summary ... 393 12. WAN and Web Connections ... 395 ... 12.1 WAN Technologies ... 397 ... 12.2 Strategies for Cost Optimization ... 405 ... 12.3 Security Aspects of WAN Communication ... 409 ... 12.4 Failure-Tolerant WAN Connections ... 411 ... 12.5 Summary ... 415 13. Adaptive Infrastructures ... 417 ... 13.1 Reasons for Adaptive Infrastructures ... 417 ... 13.2 Virtualization of Hardware ... 420 ... 13.3 SAP Adaptive Computing ... 427 ... 13.4 Storage in the Adaptive Computing Concept ... 431 ... 13.5 Software Logistics ... 432 ... 13.6 Adaptive Application Scenarios ... 439 ... 13.7 Summary ... 449 14. IT Service and Application Management ... 451 ... 14.1 IT Service Management Reference Model ... 454 ... 14.2 Enterprise System Management ... 462 ... 14.3 Business Process Management ... 474 ... 14.4 Example of a Typical Application Scenario ... 478 ... 14.5 Summary ... 488 15. SAP Operating Costs ... 489 ... 15.1 The Benefits of IT ... 490 ... 15.2 IT Cost Structures ... 490 ... 15.3 Cost-Efficiency Analyses ... 494 ... 15.4 Reducing TCO by Consolidation ... 504 ... 15.5 Reducing TCO by Platform Migration ... 510 ... 15.6 Summary ... 516 Appendix ... 519 ... A. Sources and Further Reading ... 519 ... B. The Authors ... 521 Index ... 523

About the Author :
Dr. Michael Missbach is senior consultant at Hewlett-Packard and works at the SAP HR Competence Center in Walldorf, Germany. Peter Gibbels has worked at Hewlett-Packard since 1984. As a member of the global HP Manufacturing & Industry solution development team, he is currently responsible for the definition, creation, and deployment of infrastructure, application management, and integration solutions in the area of HP Manufacturing and Distribution Industries. He started his professional career in 1975 in the telecommunications division at Deutsche Telekom and then studied Communications Engineering at the University of Applied Sciences in Aachen, Germany. For over 12 years, Peter's work has focused on integrating SAP systems in the areas of infrastructures, IT management (HP OpenView and SAP), and the integration in SAP implementation projects. Because of his global activities throughout those years, as well as his connections with HP's global implementation teams, product divisions, and customers, Peter is able to add a great deal of experience and knowledge to the HP developments in the area of application management. He is a member of the extended SAP Alliance Team at HP and is in close contact with SAP employees and HP partners. As Senior Consultant in the SAP HP Competence Center in Walldorf, Jürgen is responsible for the industry area Retail, as well as all subjects related to the combination of Business and IT. Josef Stelzel is an SAP Program Manager at Microsoft. He specializes in developing and implementing highly accessible solutions for SAP Intrastructure. As Senior Consultant in the SAP HP Compentence Center in Walldorf, Thomas is responsible for all aspects of technology and architecture of SAP system landscapes.


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Product Details
  • ISBN-13: 9781592290352
  • Publisher: SAP Press
  • Publisher Imprint: SAP Press
  • Height: 230 mm
  • Returnable: N
  • ISBN-10: 1592290353
  • Publisher Date: 28 Sep 2005
  • Binding: Paperback
  • Language: English
  • Width: 180 mm


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