IBM Systems Magazine, Mainframe Edition - November/December 2009 - 20

Focus on Storage “DFSMS provided device support for high-performance F ICON i n it s i n it ia l r e lea se w it h si ngle-t r ac k e x ploitat ion , a nd now we’ve i mproved it w it h s u pp or t for mu lt it rack ,” says Ba rba ra Mc Dona ld, DFSMS product manager. “The customer applications that are most likely to benef it are those using Media Manager for I/O, such as DB2*, PDSE [par titioned data set extended] , VSA M, z/OS Distr ibuted File Ser v ice zSer ies* File System and extended format sequential access method [SAM]. It’s potentially a significant performance benefit for online transaction processing [OLTP] workloads on z/OS.” T he ne w a r c h ite c t u r e a nd protocol a r e sig n i f ica nt enhancements, according to McDonald, and “Customers don’t necessarily have to make application changes to benefit; they must have the [System] z10 [platform] and the other required hardware and software prerequisites.” A not he r s tor a ge -p e r for m a nc e i mpr ove me nt i s t he new support of solid-state drives (SSDs) on the DS8000. SSDs are becoming an integral part of enterprise-storage in f rastr uct u res. Eli m i nat i ng d i sk latenc y, SSD-based storage may provide response-time improvements over hard-disk drives (HDDs) for certain high-use data. DFSMS now allows systems-managed storage (SMS) policies to help direct new data-set allocations to SSD volumes. New tooling also helps identif y existing data that would be better kept on SSD volumes. “I think it’s impor tant that DFSMS now suppor ts the solid-state drive option on the DS8000, since this adds a higher performance tier to the existing storage hierarchy,” says Scott Drummond, program director, System Storage and System z sales enablement. “We now have the capability of allocating new allocations to this solid-state drive. And also we have the capabilit y of migrating existing, appropriate data to it.” A not her key of fer i ng f rom DFSMS i n z /OS V1.11 is SMS data-set separation by volume, which is designed to expand existing data-set separation functions to allow users to specif y which critical SMS-managed data sets shou ld be sepa rated across ex tent pools and volu mes that aren’t used by other data specified in the separation group. Essentially, the user def ines the volume separation groups in the data-set separation profile, and during data-set allocation, SMS attempts to separate data sets t hat a re specif ied i n t he sa me sepa rat ion group onto different extent pools and volumes. The benefit is SMS users avoid single points of failure and see a reduction in I/O contention, which may result in improved performance. The DFSMSrmm TSO command-line interface and APIs now allow multiple resources to be returned per call. Exploiting this new capability—together with other changes made to reduce the overhead of API and command processing—potentially improves performance for storage resource managers like Tivoli* Omegamon XE for Storage. Usability and Simplification Extensive changes made to the report generator are intended to improve usability, enable more report customization and simplify the way selection information is specified. “The enhancements are intended to further improve the reporting available for our storage-management components including DFSMSrmm, DFSMShsm and SMS,” McDonald says. DFSMSrmm provides a new utility to enable control data set (CDS) updates made to a copy of a production CDS in test or recovery environments to be repeated against the original CDS. This enables a complete and up-to-date record of tapevolume contents and status to be retained in a single CDS in a production RMMplex. The DS8000 introduced dynamic volume expansion in 2007 and was exploited in z/OS V1.8 and above. Prior to z/OS V1.11, after expanding a volume, the user ran a job to rebuild the volume table of contents (VTOC) to make the new space available to the host systems. DFSMS now offers dynamic volume-expansion (DVE) enhancements that automate some of the process. “DFSMS further enhances its support of DVE by automating the refresh of the VTOC, moving the responsibility from the user over to the system,” says Cecilia Carranza Lewis, senior technical staff member, z/OS DFSMS archi- Links DFSMS details and availability www14.software.ibm.com/webapp/ShopzSeries/ ShopzSeries.jsp z/OS Internet Library www.ibm.com/systems/z/os/zos/bkserv/ z/OS V1R11 DFSMS Using the New Functions (SC26-7473-04) http://publibz.boulder.ibm.com/epubs/pdf/dgt2g560.pdf IBM Redbooks publication “z/OS V11 DFSMS Release Guide (SC24-7768)” www.redbooks.ibm.com/redbooks.nsf/e9abd4a2a3406a 7f852569de005c909f/9f691659c291e8248525744200 5a3af0?OpenDocument NOV EMBER/DEC EMBER 20 09 ibmsystemsmag.com/mainframe

IBM Systems Magazine, Mainframe Edition - November/December 2009

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe Edition - November/December 2009

Table of Contents
Editor's Desk:  Modus Operandi on a Budget
Trends:  DB2 X Leads the Industry to Minimize Complexity and Maximize Productivity
IT Today: New System z Solution Editions Provide a Cost-Effective Way to Meet Business Demands
Focus on Storage:  DFSMS Delivers Enhancements and Improvements With the New Release of z/OS
Cover Story:  IBM Smart Analytics Optimizer Reinvents the Data Warehouse.
Feature: IBM Offers Security Improvements In DB2 Version 9 and Beyond.
Administrator:  Configuring AEM to Monitor Power Usage
Tips & Techniques:  Managing BI With IBM Workload Manager
Advertiser's Index
Product News
Stop Run:  A New Web Site Celebrates the Mainframe’s Comeback
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Cover1
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Cover2
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 1
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Table of Contents
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 3
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 4
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 5
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 6
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 7
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Editor's Desk:  Modus Operandi on a Budget
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 9
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Trends:  DB2 X Leads the Industry to Minimize Complexity and Maximize Productivity
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 11
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 12
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 13
IBM Systems Magazine, Mainframe Edition - November/December 2009 - IT Today: New System z Solution Editions Provide a Cost-Effective Way to Meet Business Demands
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 15
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 16
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 17
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Focus on Storage:  DFSMS Delivers Enhancements and Improvements With the New Release of z/OS
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 19
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 20
IBM Systems Magazine, Mainframe Edition - November/December 2009 - IBM-1
IBM Systems Magazine, Mainframe Edition - November/December 2009 - IBM-2
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 21
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Cover Story:  IBM Smart Analytics Optimizer Reinvents the Data Warehouse.
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 23
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 24
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 25
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Feature: IBM Offers Security Improvements In DB2 Version 9 and Beyond.
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 27
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 28
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 29
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 30
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 31
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Administrator:  Configuring AEM to Monitor Power Usage
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 33
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 34
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 35
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Tips & Techniques:  Managing BI With IBM Workload Manager
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 37
IBM Systems Magazine, Mainframe Edition - November/December 2009 - 38
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Product News
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Stop Run:  A New Web Site Celebrates the Mainframe’s Comeback
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Cover3
IBM Systems Magazine, Mainframe Edition - November/December 2009 - Cover4
IBM Systems Magazine, Mainframe Edition - November/December 2009 - RF1
IBM Systems Magazine, Mainframe Edition - November/December 2009 - RF2
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