z/OS 1.5 can help signifi cantly enhance application backup with enhancements to DFSMShsm to utilize volume level fast replication. The fast backup is designed to exploit FlashCopy and the virtual concurrent copy capa- bility of IBM TotalStorage Enterprise Storage Server and IBM RAMAC Virtual Array (RVA) respectively. DFSMShsm Fast Replication in z/OS 1.5 is also intended to provide a fast, easy to use
Parallel Sysplex
zSeries Parallel Sysplex technology provides
CICS/VSAM enabled for 24x7 availability
DFSMS Transactional VSAM Services (DFSMStvs) allows you to share VSAM data sets across CICS, batch, and
JES2 and JES3
JES2 and JES3 handle the submission of work and the distribution of output for the Base Control Program. JES2 exercises independent control over its job processing functions, whereas JES3 exercises centralized control.
•In z/OS 1.2, JES2 and JES3 allow an installation to have up to 999,999 jobs managed at any single point in time. In addition, both provide the installation the ability to obtain (spinoff) their JESlog data sets prior to job com- pletion.
•The JES2 Health monitor, in z/OS 1.4, provides improved diagnostics. Even when JES2 is not responding to com- mands, the JES2 monitor, running in a separate address space, will be able to provide information about JES2’s status. JES2 also provides enhanced recovery from cor- rupted checkpoint data to prevent multisystem outages
•In z/OS 1.4, JES3 provides additional tolerance for ini- tialization errors and the MAINPROC refresh function which enables the dynamic addition of systems to the sysplex
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