4.2.5 IMS Transaction Manager in Parallel Sysplex ............. 187
4.3 Database Management in Parallel Sysplex ................. 194
4.3.1 DB2 Data Sharing Considerations .................... 194
4.3.2 IMS DB Data Sharing ............................ 203
4.3.3 CICS/VSAM Record Level Sharing Considerations .......... 207
4.3.4 S/390 Partners in Development Databases ............... 213
4.4 Batch Workload Considerations ........................ 213
4.4.1 JES2 Considerations in Parallel Sysplex ................ 213
4.4.2 JES3 Considerations in Parallel Sysplex ................ 214
4.4.3 Can I Have JES2 and JES3 in the Same Sysplex ........... 215
4.4.4 Batch Workload Balancing and Parallel Sysplex ........... 215
4.4.5 IBM BatchPipes for OS/390 ........................ 215
4.5 Network Workload Balancing Capabilities .................. 219
4.5.1 VTAM Generic Resources Function ................... 219
4.5.2 TCP Workload Balancing .......................... 225
4.6 APPC/MVS and Parallel Sysplex ........................ 226
4.7 TSO/E and Parallel Sysplex ........................... 227
4.7.1 MAS Considerations ............................ 227
4.7.2 Query Management Facility Workload Considerations ........ 228
4.8 Test Considerations in Parallel Sysplex ...................
228
4.8.1 Testing Implications in Parallel Sysplex .................
228
4.9 How to Select Applications to Exploit Parallel Sysplex ..........
231
Appendix A. Special Notices
............................
233
Appendix B. Related Publications
.........................
237
B.1 IBM Redbooks ..................................
237
B.2 IBM Redbooks collections ...........................
239
B.3 Other Resources .................................
239
B.4 Packages .....................................
241
B.5 Other References ................................
243
How to Get IBM Redbooks
..............................
247
IBM Redbook FAX Order Form ...........................
248
Glossary
......................................... 249
List of Abbreviations
................................. 269
Index
...........................................
275
IBM Redbooks evaluation
..............................
317
OS/390 Parallel Sysplex Configuration Volume 2: Cookbook
1.0 CPC and CF Configuration in Parallel Sysplex
................. 1
1.1 An Overview of CPC and CF Configuration Tasks .............. 3
1.2 CPC and CF Technology .............................. 6
1.2.1 CPC/CF Configuration Options ....................... 6
1.2.2 Deciding between the CPC Options ....................
6
1.2.3 Processor Speed ...............................
8
1.2.4 CF Capabilities That Affect Configuration Options ............
9
1.2.5 CF Link Types .................................
11
1.3 CPC Capacity ....................................
14
1.3.1 Sizing and Modelling Options for CPC ...................
15
Contents
v
1.3.2 Calculate Additional Capacity for Data Sharing ............. 16
1.3.3 Logical Partitioning (LPAR) Impact on Sizing .............. 20
1.3.4 Sizing the CPC Storage for Parallel Sysplex ............... 21
1.3.5 Impact of Parallel Sysplex on the Number of I/Os ............ 25
1.4 CF CP Capacity ................................... 26
1.4.1 CF Topology Considerations ........................ 26
1.4.2 Deriving Required CF CP Capacity ..................... 30
1.4.3 Hot Standby CFs ................................ 41
1.4.4 CPC/CF Parallel Sysplex Sizing Tools ................... 42
1.5 CF Links ....................................... 43
1.5.1 CF Sender Channels (TYPE=CBS, TYPE=CFS or TYPE=ICS) .... 44
1.5.2 CF Receiver Channels (TYPE=CBR, TYPE=CFR or TYPE=ICR) ... 44
1.5.3 CF Link Sharing ................................ 44
1.5.4 How Many CF Links Do I Need? ...................... 45
1.5.5 Effect of Distance on Fiber Links ...................... 46
1.6 CF Storage ...................................... 47
1.6.1 Estimating CF Storage Requirements ................... 49
1.6.2 Sample CF Storage Map ........................... 51
1.6.3 CF Structure Size Summary ......................... 52
1.6.4 Summary Table for CF Storage Sizing ...................
54
1.7 Review Final Configuration ............................
55
2.0 A Structured View of CF Structures
.......................
57
2.1 CF Structures Overview ..............................
60
2.1.1 CF Structure Exploiters ............................
62
2.1.2 Structure and Connection Disposition ...................
66
2.1.3 CF Volatility/Nonvolatility ..........................
67
2.2 CF Storage for Structures .............................
68
2.2.1 Initial Structure Sizes .............................
69
2.2.2 Using Central and Expanded Storage for the CF .............
76
2.2.3 Structure Placement .............................
77
2.2.4 CF Exploiter Specifics ............................
78
2.3 XCF Structures ...................................
79
2.3.1 XCF Structure Usage .............................
79
2.3.2 XCF Structure Sizing ............................. 79
2.3.3 XCF Structure Placement .......................... 81
2.3.4 XCF Structure Rebuild Considerations .................. 81
2.3.5 XCF Structures and Volatility ........................ 82
2.4 VTAM Structures .................................. 83
2.4.1 VTAM Structures Usage ...........................
83
2.4.2 VTAM Structures Sizing ...........................
84
2.4.3 VTAM Structures Placement ........................
86
2.4.4 VTAM Structures Rebuild Considerations ................. 87
2.4.5 VTAM Structures and Volatility ....................... 88
2.5 RACF Structures ..................................
89
2.5.1 RACF Structure Usage ............................ 89
2.5.2 RACF Structure Sizing ............................ 89
2.5.3 RACF Structure Placement ......................... 91
2.5.4 RACF Structure Rebuild Considerations ................. 91
2.5.5 RACF Structures and Volatility .......................
92
2.6 JES2 Structures ...................................
93
2.6.1 JES2 Structure Usage ............................
93
2.6.2 JES2 Structure Sizing .............................
93
2.6.3 JES2 Structure Placement ..........................
94
2.6.4 JES2 Structure Rebuild Considerations ..................
95
vi
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