z/OS V2R1 migration and installation

z/OS V2R1 - Get Ready for Smarter Computing with z/OS

IBM z/OS V2R1 delivers new availability, batch programming, and usability functions. IBM® z/OS® V2R1 and IBM z/OS Management Facility V2R1 include many new capabilities designed to address systems management and operations, batch programming and performance, as well as usability and optimization functions. Your data, applications, and systems are critical; z/OS and z/OSMF can help you manage your systems and optimize your staff.

You can find the following installation information topics on this Web page:

Announcement Letters for z/OS V2R1

IBM fee offerings

IBM Lifecycle Extension for z/OS V1R11

The IBM Lifecycle Extension for z/OS V1R11 (5657-A01) provides fee-based corrective service (a fix, bypass, or restriction to a problem) for up to two years beyond the September 30th 2011 withdrawal of service date for z/OS V1R11 (5694-A01). The Lifecycle Extension for z/OS V1R10 enables z/OS V1R10 users who have not completed their migration to z/OS V1R12 (or z/OS V1R11) to continue to receive corrective service for z/OS V1R10 up through September 30, 2014

Ordering z/OS and related products


You can order products and maintenance for the z/OS platform on the Web. ShopzSeries provides a self-service planning and ordering capability on the Web. You can order system/product upgrades for either ServerPac or CBPDO. ShopzSeries includes the following significant functions:

ShopzSeries support for maintenance includes ordering corrective service by PTFs or APARs and Recommended Service Upgrade (RSU) preventive service. In addition, service orders can be received on traditional media or the Internet. For an RSU order, you can upload your SMP/E CSI installed service inventory, which is used to customize your order and eliminate duplicate service.

IBM has delivered z/OS platform products on DVD starting September 10, 2010. This expands the delivery options available to include Internet, DVD, 3590, and 3592 tape. Installation from DVD will require network connectivity between your z/OS system and a workstation having a DVD drive. Product delivery on all 3480 and 3490 tape media was discontinued October 26, 2010. For more information see the July 22, 2010 IBM United States Software Announcement letter (210-235).

IBM US software order status

Get status for a software order you've already placed.

z/OS installation-related publications

Featured z/OS V2R1 installation planning and migration resources
Order number Filename Title Download
GA23-0887-00 e0z3a100 z/OS Introduction and Release Guide PDF 
GA23-0889-02 e0z3m102 z/OS V2R1 Migration PDF 
GA23-0890-02 e0z3b102 z/OS V2R1 Planning for Installation PDF 
SA23-2278-01 gim1a201 ServerPac Using the Installation Dialog (Dialog Level 26) PDF 
GI11-9848-00 e0zpdz00 Program Directory For CBPDO Installation and ServerPac Reference z/OS V2R1 PDF 

Other useful resources

Performance information and storage requirement

Over several z/OS releases, we have provided system-level performance improvements, and V2.1 continues the trend. Performance tests show up to a 2% CPU reduction when migrating from z/OS V1.13 to V2.1. At z/OS V2R1 GA, the zSoftCap tool provides more specific capacity planning information for the migration to z/OS V2R1.

The minimum amount of real storage required to IPL z/OS depends on a number of factors, including the number of devices in the I/O configuration, the amount of storage configured, the number of address spaces created, the types of applications supported, and the products and subsystems supported in the IPLed system. In IPL studies at IBM, 256 MB of real storage was the minimum amount required to IPL z/OS V1R13 and z/OS V2R1. The systems in the studies were IPLed to the point of completing JES2 initialization. The systems had I/O configurations defined with the following devices:

  • 51168 direct access devices (DASDs)
  • 16 graphics devices
  • 5127 channel-to-channel (CTC) connections
  • 52 tape drives

For z/OS V2R1, it is recommended that you monitor your real storage usage, and determine whether to add more real storage for better execution of workloads. The minimum stated here is not a likely environment for many installations, however, it has been observed that many systems perform adequately with between 8GB to 16GB of real storage, depending on the workload and system definition. A good indication that you have chosen an acceptable real storage value for your system is if no paging occurs, or if the amount of paging that does occur is within your service level objectives.

Check out the latest edition of the z/OS Platform Test Report.

Documentation for a ServerPac program that allows you to find strings within a PDS and to change the contents of those strings.

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