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SAP Hardware Solutions: Servers, Storage, and Networks for

By Michael Missbach, Uwe Hoffmann

Published by Prentice Hall

Published Date: Nov 20, 2000

Table of Contents


How This Book Is Organized.


About the Authors.

1.SAP System Architecture Overview: What Is

The World. SAP System Technology.

2. Server Platforms for Server, OS, and Database Platforms.

Operating System and Database Support. OS Platforms. Database Platforms. SAP Software Support Matrix. Heterogeneous Platform Support. Server Technologies. Server (HW) Platform Vendors. Processors. Memory Architectures. System Bus Architectures. I/O Architectures. Memory Addressing. Total Cost of Ownership. Overall Project Costs. System Consolidation.

3. Sizing Systems for The Science of Estimation.

The Business Processing Requirements. Sizing Process Overview. Methodology. Collecting the Data. Sizing Tools. Computing the Requirements. Other Business Applications. Determining the Server's Configuration. Determining the SAPS. Determining the Memory and Disk Configuration.

4. Data Storage for SAP: A Strategic Resource.

Disk and Storage Basics. Database Server Perspective. Storage System Perspective. Disk I/O Patterns: A Business Application Perspective. Disk Drive Mechanisms. Disk I/O Channels. Data Protection (Disk Availability). Basic Principles. Disk Redundancy-RAID Levels. Software RAID and File Systems. Hardware RAID. Data Replication. Scalability and Managing Growth. Sizing the Storage System. Disk Systems and Interconnectivity. The Need for Data Archiving. Disk Layout Terminology and Examples. Terminology. SAP R/3 Database Layout. Disk Layout Examples of SAP Systems.

5. High-Availability Solutions for Backup, Recovery, and Failover.

High-Availability Introduction. Downtime. Costs of Downtime: Is HA Needed? Specifying Uptime. Backup and Recovery Solutions. Backup and Restore ConÞgurations. Influences on Backup and Restore Time. Failover Solutions. Vulnerable Components. Clustering Basics for SAP. Hardware Notes for Clustering Configurations. Microsoft Cluster Server HA Configurations. Unix Clustering HA Configurations. Database Failover. Higher Levels of SAP Availability. High Availability Review for Administration Philosophy for HA.

6. PCs, NCs, and Printers: User Interfaces and Output Management.

The Front-End-Interface to the User. Windows-Based Front-Ends. Java-Based Front-Ends. Browser-Based Front-Ends. From GUI to Workplace. Printer-Hardcopy Output for Spool Management. Forms Management. Output Management.

7. Network Requirements for SAP: Building the Link Between Servers and Clients.

The Influence of the Network on Performance. The Influence of the Network on Cost. Bandwidth Demand for SAP Server Communication. Bandwidth Demand for SAP Front-End Communication. Bandwidth Demand for Print Output. Bandwidth Demand for CPI-C Connections. Bandwidth Demand for RFC Data Transmission. The Influence of Network on Availability.

8. Logical Network Architectures: A Question of Protocol.

IP Networks-Mission Pathfinder. Flat versus Hierarchical Networks. IP Address Design Considerations. Host Names and Address Resolution. Naming Resolution Mechanisms. SAP Servers with Multiple Network Cards. Separate Server Network. SAP Front-Ends and DHCP. Identifying SAP Traffic.

9. Cables and Cabinets: Passive But Essential for Reliability.

Wires and Fibers. Copper Cabling. Fiber Optic Cabling. Wireless LAN Technologies. Cabling Cabinets. Installation Guidelines for Cables. Topologies. Bus Topology. Star Topology. Hierarchical Star Topology-The Structural Standard. High-Availability Cabling Topologies. Ring Topology. Meshed Topology. Cable Cluster-A High-Availability Cable Concept.

10. Local Network Solutions: SAP on the Internal Information Superhighway.

Applications Compete for Bandwidth! Bandwidth Requirements of Network Segments. Network Technologies-Lord of the Rings versus the Ether. Fast, Giga, and more Ethernet. Broadcasts-The Hidden Performance Killer. Mono-Protocol Networks. Domain Segmentation by VLANs. Automatic Broadcast Control. High Availability for Local Area Networks. Redundant Network Links? Beware of Loops! Spanning Tree. Link Aggregation. Network Clustering. Switch Meshing.

11. Wide Area Connectivity: SAP Services Beyond the Property Borders.

Which Wide Area Service Is Appropriate? Technical Characteristics of WAN Services. Cost Characteristics of WAN Services. Deploying Routers to Preserve WAN Bandwidth. Filtering, Spoofing, Proxy, and Compression. Bandwidth on Demand. Data Prioritization. Security Aspects of WAN Communication. Fault-Tolerant WAN Concepts. Hardware Redundancy. Connection Redundancy.

12, SAP Internet Integration: Secure SAP Services for E-Commerce.

Performance and Reliability Aspects. ITS Architecture. Internet Communication Manager. SAP Business Connector. DCOM Connector. Security Aspects of Internet Communication. Secure Network Infrastructure. Trusted Gateways-HP VirtualVault.


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