IBM Systems Magazine, Mainframe - September/October 2012 - (Page 35)

Administrator Getting the most from your systems Simplifying Data Management in a Big Data World New DFSMS features increase the availability of data on System z By Cecilia Carranza Lewis, Terri Menendez and Jaya Srikrishnan ata sources have increased exponentially in the past decade. IDC estimated in a July 2011 study that worldwide data volumes double every two years. While traditional data sources yield a larger and more varied set of information, new sources are added almost daily. The volume of information from each source also grows as computing capacity is added to the smallest of gadgets. For each person on the planet, an estimated 45 GB of data exists. Most of it ends up stored in corporate IT departments, with up to 1.8 trillion GB created in 2011. Experts predict that number will grow 60 percent annually. The cost of managing this data is staggering. Not only does it require growth in storage media, but also in administrative expense for managing it all. The Data Facility Storage Management Subsystem (DFSMS) was originally developed to reduce the administrative cost of managing storage and data, but it also works effectively with other components in z/OS* and storage hardware to more efficiently manage storage. Two examples of this are Extended Address Volumes (EAVs) and Control Area (CA) Reclaim in the VSAM access method. D Extended Address Volumes EAVs were introduced with the IBM TotalStorage* DS8000* family of products to provide relief to customers constrained by disk capacity growth as they approached the device number limit. EAVs are defined as volumes with more than 65,520 cylinders and supported only with 3390 Model A devices. In z/OS V1.10, EAVs four times as large as the prior maximum size volume (54 GB) could be created, enabling ibmsystemsmag.com/mainframe SEPTEMBER/OCTOBER 2012 35 http://www.ibmsystemsmag.com/mainframe

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - September/October 2012

Table of Contents
Editor's Desk: Keep Your Eye on the Ball
IBM Perspective: Transforming Data Into Value
Focus on Storage: Smarter Solutions are Designed to Meet Increasing Demands for Information
Case Study: Bringing Order to Disorder: Commerce Bank employs an enterprisewide solution to track application changes
Cover Story: The Next Evolution in Hybrid Computing: IBM launches the second generation of zEnterprise-zEC12
Feature: Conquering Chaos: System z technology helps manage data mart complexities for business analytics
Feature: Split-Second Decisions: SPSS Modeler 15 offers real-time scoring for faster, more effective insights
Tech Corner: The What and Why of zEnterprise Millicode
Administrator: New DFSMS Features Increase the Availability of Data on System z
Solutions: CICS JS/Server V1.1 - DR/VFI- JCL-QA
Advertiser's Index
Stop Run: A 1440 Data Processing System Finds New Life After 50 Years
Reference Point - Global Events, Education, Resources for Mainframe
Women in Technology
Services Blueprint: A New Category of Computing - IBM PureSystems family
NEW 2013 Mainframe Buyer's Guide

IBM Systems Magazine, Mainframe - September/October 2012

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