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ABCs of IBM z/OS System Programming Volume 3

by Jose Gilberto Biondo Jr.

January 2018

Intermediate to advanced

169 pages

5h 18m

English

IBM Redbooks

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1.1 Introduction to DFSMS1.1.1 DFSMS components1.2 DFSMSdfp base element1.2.1 Managing storage1.3 DFSMSdss optional feature1.4 DFSMSrmm optional feature1.4.1 Library management1.4.2 Shelf management1.4.3 Volume management1.4.4 Data set management1.5 DFSMShsm optional feature1.5.1 Storage and space management1.5.2 Tape mount management1.5.3 Availability management1.6 DFSMStvs optional feature1.6.1 VSAM record-level sharing1.6.2 Recoverable resource management services
2.1 Data sets on storage devices2.1.1 Storage devices2.1.2 DASD volumes2.1.3 Tape volumes2.2 Data set types2.2.1 Non-VSAM data sets2.2.2 VSAM data sets2.2.3 z/OS UNIX files2.2.4 Object data sets2.2.5 Other data set attributes2.3 Data set striping2.3.1 Physical sequential and VSAM data sets2.4 Accessing your data sets2.4.1 Accessing cataloged data sets2.4.2 Accessing uncataloged data sets2.5 VTOC and DSCBs2.5.1 Data set control block2.5.2 VTOC index2.5.3 Creating VTOC and VTOC Index
3.1 Traditional DASD capacity3.1.1 Serialization granularity3.1.2 DASD virtual visibility3.1.3 Multiple allegiance3.1.4 Parallel access volume3.1.5 HyperPAV feature3.2 Extended access volumes3.2.1 3390 Model A3.2.2 EAV volumes architecture3.2.3 EAS eligible data sets3.2.4 EAS non-eligible data sets3.2.5 Dynamic volume expansion3.3 EAV and IGDSMSxx parmlib member3.3.1 IGDSMSxx USEEAV parm3.3.2 IGDSMSxx BreakPointValue3.4 EATTR attribute3.5 Migration assistance tracker
4.1 Overview of DFSMSdfp utilities4.1.1 System utility programs4.1.2 Data set utility programs4.2 DFSMSdfp access methods4.2.1 Basic sequential access method4.2.2 Basic direct access method4.2.3 Basic partitioned access method4.2.4 Queued sequential access method (QSAM)4.2.5 Object access method4.2.6 Virtual Storage Access Method4.3 Access method services (IDCAMS)4.3.1 Access method services commands4.3.2 Starting the IDCAMS utility program4.3.3 IDCAMS functional commands4.3.4 AMS modal commands4.3.5 DFSMS Data Collection Facility (DCOLLECT)4.3.6 Generation data group4.4 Virtual Storage Access Method4.4.1 Logical record4.4.2 Physical record4.4.3 Control interval4.4.4 Control area4.4.5 Component4.4.6 Cluster4.4.7 Sphere4.4.8 Other VSAM terminologies4.4.9 Typical KSDS processing4.4.10 Typical ESDS processing4.4.11 Typical RRDS processing4.4.12 Typical LDS processing4.4.13 VSAM: Data-in-virtual4.4.14 VSAM resource pool4.4.15 VSAM: System-managed buffering4.5 Data set separation4.6 Data Facility sort4.6.1 DFSORT functions4.7 Data Set Services (DFSMSdss)4.7.1 Physical and logical processing4.7.2 DFSMSdss stand-alone services4.8 Hierarchical Storage Manager4.8.1 DFSMShsm data sets4.8.2 Storage device hierarchy4.8.3 Availability management4.8.4 Space management4.9 Removable media manager (DFSMSrmm)4.9.1 Resources managed by DFSMSrmm4.9.2 Libraries and locations4.9.3 Managing data
5.1 DFSMS and storage management5.1.1 Managing storage with DFSMS5.1.2 Goals and benefits of system-managed storage5.1.3 Service level objectives5.1.4 SMS configuration5.1.5 SMS control data sets5.1.6 Data sets eligible for SMS management5.1.7 Data sets non-eligible for SMS management5.1.8 Implementing DFSMS5.2 DFSMS constructs5.2.1 Data class5.2.2 Storage class5.2.3 Management class5.2.4 Storage group5.2.5 Using aggregate backup and recovery support5.2.6 Automatic class selection routines5.3 Maintaining and monitoring SMS policies5.3.1 Starting SMS5.3.2 Activating a new SMS configuration5.3.3 Controlling SMS processing using operator commands5.4 Interactive Storage Management Facility5.4.1 ISMF: What you can do with ISMF5.4.2 Accessing ISMF
6.1 The integrated catalog facility structure6.1.1 Basic catalog structure6.1.2 VSAM volume data set6.2 Aliases6.2.1 Multilevel aliases6.3 Catalog search order6.3.1 Search order for catalogs for a data set define request6.3.2 Search order for locating a data set6.4 Using multiple catalogs6.4.1 Splitting catalogs6.4.2 Merging catalogs6.5 Sharing catalogs across systems6.6 Catalog caching6.6.1 In-storage cache6.6.2 Catalog data space caching6.6.3 Enhanced Catalog Sharing6.6.4 VSAM record-level sharing6.7 Catalog address space6.8 Maintaining your catalogs6.8.1 Listing a catalog6.8.2 Backup procedures6.8.3 Recovery procedures6.8.4 Checking the integrity on an ICF structure6.8.5 Catalog performance6.8.6 Working with the catalog address space
7.1 VSAM record-level sharing introduction7.1.1 Supported data set types7.1.2 Coupling facility overview7.1.3 VSAM RLS sharing control data sets7.1.4 Data set sharing under VSAM RLS7.2 VSAM RLS locking7.3 Buffering under VSAM RLS7.4 VSAM RLS/CICS data set recovery7.5 Backup and recovery of VSAM data sets7.5.1 Recover a VSAM data set7.5.2 Transactional recovery7.6 The SMSVSAM address space7.7 DFSMStvs introduction7.7.1 Components used by DFSMStvs7.7.2 DFSMStvs use of z/OS RRMS7.7.3 Atomic updates7.7.4 Unit of work and unit of recovery7.7.5 DFSMStvs logging7.8 Accessing a data set with DFSMStvs7.9 Application considerations7.9.1 Break processing into a series of transactions7.9.2 Modify the program or JCL to request DFSMStvs access7.10 The DFSMStvs instance7.10.1 Interacting with DFSMStvs

8.1 Overview of DASD types8.1.1 DASD based on RAID technology8.2 Redundant Array of Independent Disks8.2.1 RAID implementations8.3 IBM DS8000 series8.3.1 DS8000 hardware overview8.3.2 DS8000 major components8.4 IBM TotalStorage Resiliency Family8.4.1 Copy Services8.4.2 FlashCopy8.4.3 Metro Mirror function8.4.4 Global Copy function8.4.5 Global Mirror function8.4.6 Metro/Global Mirror function8.4.7 z/OS Global Mirror function8.5 DS8000 performance features8.5.1 I/O priority queuing8.5.2 Custom volumes8.5.3 Improved caching algorithms8.5.4 I/O Priority manager8.5.5 Easy Tier8.5.6 Thin provisioning8.6 Introduction to tape processing8.6.1 SL and NL format8.6.2 Tape cartridges8.7 IBM TS1155 tape drive8.8 IBM TS4500 tape library8.9 Introduction to IBM TS77008.9.1 IBM TS7700 models8.10 Introduction to TS7700 Grid configuration8.10.1 Copy consistency8.10.2 VTS advanced functions8.11 Storage area network8.11.1 FICON and SAN
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Content preview from ABCs of IBM z/OS System Programming Volume 3

Extended address volumes

z/OS V1R10 introduced extended address volume (EAV), which allowed direct access storage devices (DASD) storage volumes to be larger than 65,520 cylinders. The increased volume capacity relieves a major system constraint, which is the maximum number of units you can define to a system at any single time.

This chapter introduces you to EAV, and brief you about its architecture, usage, and restrictions. It includes the following ...

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