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vi Storage Management with DB2 for OS/390
7.5.1 StorageClass .........................................72
7.5.2 Management Class . ....................................72
7.5.3 StorageGroup.........................................73
7.6 Summary................................................. 73
Chapter 8. Converting DB2 to Systems Managed Storage ............75
8.1 Overview.................................................75
8.2 Advantages of SMS Managing DB2 Data......................... 75
8.3 SMS Management Goals. .................................... 76
8.4 PositioningforImplementation................................. 77
8.4.1 Prerequisite Planning....................................77
8.4.2 ServiceLevelAgreement.................................78
8.5 ConversionProcess ........................................78
8.5.1 Sequence . . . .........................................78
8.5.2 Methodology . ......................................... 79
8.5.2.1ConversionWindow .....................................79
8.5.2.2DataMovement.........................................79
8.5.2.3TailorOnlineConversion..................................79
8.5.2.4 Contingency Time Frame . ................................80
8.5.3 SMSImplementation.................................... 80
8.5.4 PostImplementation ....................................81
8.6 DFSMSFIT...............................................81
8.7 NaviQuest................................................81
Part 3. DB2 and Storage Servers .................................................. 83
Chapter 9. Disk Environment Overview ...........................85
9.1 EvolutionofDiskArchitecture .................................85
9.1.1 3380 and 3390 Volumes . . . ..............................85
9.1.2 Arrays...............................................85
9.1.3 Log Structured File and SnapShot . .........................86
9.1.4 VirtualVolumes........................................ 88
9.2 DiskControlUnits..........................................89
9.2.1 StorageServer ........................................89
9.2.2 StorageDevices ....................................... 90
9.2.3 Logical Control Unit . ....................................90
9.3 Cache Management ........................................90
9.3.1 TrackCaching.........................................91
9.3.2 ReadRecordCaching................................... 91
9.3.3 WriteRecordCaching(Quickwrite) .........................92
9.3.4 Sequential Caching . ....................................92
9.3.5 NoCaching—BypassCache.............................. 92
9.3.6 No Caching—Inhibit Cache Load . . .........................92
9.3.7 DB2CacheParameters(DSNTIPE).........................92
9.3.8 Dynamic Cache Management Enhancement ..................92
9.4 Paths and Bandwidth Evolution . . .............................. 93
9.5 Capabilities ............................................... 93
9.5.1 DualCopy............................................93
9.5.2 ConcurrentCopy....................................... 94
9.5.3 VirtualConcurrentCopy.................................. 95
9.5.4 RemoteCopy..........................................95
9.5.4.1PPRC ................................................96
9.5.4.2GeographicallyDispersedParallelSysplex....................97