Automated synchronization of Resource Access Control Facility (RACF) data between systems can reduce the amount of time administrators spend manually keeping data synchronized between RACF databases. The RACF remote sharing facility (RRSF) can be used to synchronize RACF data between z/OS RACF databases but not between z/OS and z/VM RACF databases. Furthermore, RRSF is not available on z/VM to allow synchronization between z/VM RACF databases.
In our just published draft IBM Redpaper entitled, ... [More]
My next residency that will be starting on April 2, 2013 is about how to set up a Linux on System z environment for production. I've been really busy examining and clarifying the objectives for this residency. I wanted to make sure I pulled together a team of people that have real world, live customer experiences.
The aim of this residency is to examine the setup of an LPAR using shared CPUs with memory for a production environment and another LPAR that shares some CPUs but also has a dedicated one for production. Running in z/VM mode, it... [More]
Flash Express introduces SSD technology to the IBM zEnterprise EC12 server, which is implemented by using Flash SSDs mounted in PCIe Flash Express feature cards. This blog entry provides an brief overview and an example of allocating Flash Express storage to a z/OS partition.
Flash Express Overview
Flash Express is an innovative solution available on zEC12 designed to help improve availability and performance to provide a higher level of quality of service. It is designed to automatically improve availability for key workloads at... [More]
Hopefully many of you are familiar with the z/OS Planned Outage Avoidance Redbook that we publised in 2006. The objective of that book was to create a concise source of information about the many enhancements to z/OS that help you avoid planned outages. That book was downloaded thousands of times and received very favorable star ratings.
That book covers the capabilities that were delivered up to and including z/OS 1.7. But our friends in Development have not been resting on their laurels - far from it. So, in... [More]
Qi Ye is a System z Senior IT Specialist working in GMU ATS as a System z architect in China. He has 8+ years of experience in System z technical support. He mainly focuses on System z hardware, z/OS, DB2 for z/OS, z/VM and Linux on System z. He currently provides pre-sales System z technical support to GMTs, including GCG.
This is my second time in Poughkeepsie working on an IBM Redbooks residency. I really enjoyed the residency to work with a group of smart people from different part of the world. It's a wonderful... [More]
Livio Sousa is an Certified IT Specialist with with over 12 years of experience with high-end platforms, which encompasses servers, storage and networking equipment. Throughout his career he has had the opportunity to work with several different software platforms, such as z/OS, Unix, Linux and Windows as well as different hardware processor architectures such as the z/Archtecture and the IA-32 architecture and its extensions. For the past 10 years he has been working as a System z Client Technical Specialist, responsible for provisioning... [More]
On October 12, 2011, IBM announced the z/VM version 6.2. This newest release introduced single system image (SSI) and live guest relocation (LGR), a first for the mainframe. SSI is a separately orderable priced feature of the z/VM version 6.2. This new version of z/VM introduces multisystem clustering technology that allows up to 4 z/VM instances in a single system image cluster. This is important because it offers clients an attractive alternative to vertical growth by adding new z/VM systems. In the past, this capability required duplicate... [More]
My guest blogger for the next week or two is Mike MacIsaac, an IBM z/Vm and Linux on System z consultant working with the z/VM and Linux Lab-based services team in IBM Poughkeepsie, NY.
...We got funding this year to update "The Virtualization Cookbook", this time as an official IBM Redbooks publication. We have a great team of five residents representing four continents, IBM, Red Hat, SUSE and a customer. We have varying degrees of Linux and z/VM skills and four weeks to complete most of the work. We're... [More]
More from Mike MacIsaac, an IBM z/Vm and Linux on System z consultant working with the z/VM and Linux Lab-based services team in IBM Poughkeepsie, NY and currently working on an ITSO residency to update the Virtualization Cookbooks. This updated book will be called The Virtualization Cookbook for z/VM, RHEL and SLES, SG24-8147
Thought I'd blog a bit more on "The Virtualization Cookbook" residency. The first week we got a z/VM ESP system installed in a 2-node SSI cluster (see my blog post on that here ). We... [More]
Martijn Raave is a certified System z Client Technical Specialist for IBM's Systems and Technology Group (STG) in the Netherlands. Over a period of 15 years his professional career has (r)evolved around the mainframe platform. Before joining IBM through a strategic outsourcing deal in 2005, he worked for a large Dutch customer as a systems programmer with expertise in the areas of z/OS, (Globally Dispersed) Parallel Sysplex and hardware. 4 years ago he decided to explore the other aspects of the mainframe ecosystem within IBM and joined STG... [More]
Berthold Gunreben is a Build Service Engineer at SUSE in Germany. He has 14 years of professional experience in Linux and is responsible for the administration of the Mainframe system at SUSE. Besides his expertise with Linux on System z, he is also a Mainframe System Specialist certified by the European Mainframe Academy. Berthold recently joined the ITSO in Poughkeepsie, NY where he worked on updating the soon to be released IBM Redbooks publication, The Virtualization Cookbook for z/VM 6.3, RHEL 6.4 and SLES 11 SP3, SG24-8147.
In June... [More]
Richard Lewis is an IBM employee who is part of the IBM Washington System Center, Advanced Technical Support Organization supporting z/VM and Linux on System z.
In August of this year IBM announced the acquisition of CSL International, a leading provider of virtualization management technology. As part of the sales enablement strategy for this new IBM technology, a team at the International Technical Support Organization (ITSO) in Poughkeepsie, NY, is beginning work to produce a Redbooks publication designed to help... [More]
Richard Lewis is an IBM employee who is part of the IBM Washington System Center, Advanced Technical Support Organization supporting z/VM and Linux on System z. This is part two of a multi-post series on IBM Wave for z/VM, a systems management GUI for z/VM .This software promises to simplify the task of administering Linux guests running on z/VM. To read part one, see https://ibm.biz/BdDaBv .
Many customers who will be installing and implementing IBM Wave will no doubt have an existing z/VM and Linux for System z... [More]
InfiniBand coupling links were a huge step forward for System z coupling. For the first time, a single physical coupling link could be shared across more than one sysplex. They provide the flexibility to assign multiple CHPIDs to a single coupling link. The 1X links provide the ability to have up to 32 subchannels per CHPID, thereby addressing the high subchannel utilization that is common when using a sysplex that spans multiple sites. And the 12X links, when run in IFB3 mode, deliver significantly better response times... [More]
The GDPS Family An Introduction to Concepts and Facilities , SG24-6374 book provides information to help you understand the capabilities of the various GDPS offerings, and helps you identify the offering that most closely addresses your availability and disaster recovery requirements. It discusses both two-site and three-site scenarios, distributed over metro and global distances.
Now, the book has been updated with information about the latest release of the GDPS/Active-Active Sites offering, release 1.4. This release expands... [More]