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Category Archives: IBM zEnterprise Servers
IBM Mainframes High Availability Concepts and Sysplex
High availability can be achieved in IBM mainframe environment utilizing parallel sysplex. Parallel sysplex is clustering technology which enables total capacity of multiple processors to be applied against common workloads as if they are part of a single computer … Continue reading
Dynamic Workload Management in IBM System z Mainframe Environment
Summary Workload manager (WLM) employed in IBM System z environment is one of most sophisticated performance monitoring and control tool in IT industry. In this article, first WLM concepts and facilities has been summarized. After going over evolution from machine … Continue reading
Posted in IBM zEnterprise Servers, IT Service Management
Tagged CHPID, compatibility mode, discretionary, execution velocity, goal mode, ICS, IPS, IRD, jes, LPAR, management, middleware, parmlib, performance index, response time, service level, sla, slm, SYSPLEX, wlm, workload
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Business Continuity Concepts at a Glance
Expectations from today’s business environment are high availability, continuous operation and quick disaster recovery. For these reasons, enterprises and partners try to increase their ability to respond to risks. Although it is more difficult, they also try to utilize opportunities. … Continue reading
Posted in IBM zEnterprise Servers, IT Service Management, Risk Management
Tagged application, availability, backup, business, commit, consistency, consistent, continuity, data, database, disaster, downtime, hardware, image copy, integrity, log, maintenance, objective, opportunity, outage, primary, recovery, repeatable, Risk, roll back, secondary, site, timeline, tolerable, transaction, unit of work
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IT Security Audits for IBM zOS Systems from Top Secret Perspective
An information technology security audit is a manual or systematic measurable technical assessment of an information system. Manual assessments include interviewing staff, performing security vulnerability scans, reviewing application and operating system access controls, and analyzing physical access to the systems. … Continue reading
Posted in IBM zEnterprise Servers, Risk Management
Tagged ACID, apf, APPC, audit, batch, CA, CAAT, CICS, Computer Associates, EAL5, ftp, IBM, IEHINITT IEFBR14, IEHPROGM, IT security, jcl, jes, jes2, job, LPAR, mainframe, MQ, MSCA, omvs, PPT, PROCLIB, racf, SCA, sna, SPZAP, STC, system z, TCP, top secret, TSO, tss, TSSAUDIT, TSSCHART, TSSTRACK, TSSUTIL, VCA, WHOHAS, WHOOWNS, z series, ZCA, zOS
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BMC Control-M and Control-O Products on zOS
Job scheduling and console automation are very important operational characteristics of high-end enterprise data centers. Control-M and Control-O are nice pieces of BMC software to achieve high service levels. I will tell how to use these tools in customer installations. … Continue reading
Posted in IBM zEnterprise Servers, IT Service Management
Tagged automation, BMC, CONSOLE, Control-M, Control-O, IOAISPF, job, rule, schedule, scheduling, zOS
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zSecure Installation and Operation
zSecure is a suite of security products to improve management of System z security environment. zSecure Admin and zSecure Visual components are the ones I installed and reconfigured recently. zSecure Admin lets security administrator perform more productive and zSecure Visual … Continue reading
SMP/E HOLDERROR Processing in IBM System z Software Management
Recent discussions with some colleagues showed me that this is an area which requires some clarification. SMP/E (System Management Program/Extended) is the tool for performing maintenance on z/OS systems and System z components like DB/2, CICS, WAS etc. Program products … Continue reading
Increasing Number of CHPIDs (Channel Path Identifiers) for LCUs (Logical Control Units)
The channel subsystem (CSS) and the IBM z/OS operating system need to know what hardware resources are available in the computer system and how these resources are connected. This information is called hardware configuration. Hardware Configuration Definition (HCD) provides an … Continue reading
