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IBM ^ zSeries 890 and z/OS
Reference Guide
January 2005
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Table of Contents z/Architecture page 5 IBM ~ zSeries 990 page 6 z890 Family Models page 10 z890 and z900 Performance Comparison page 13 z890 I/O SubSystem page 14 z890 Channels and I/O Connectivity page 16 Fibre Channel Connectivity page 18 A New Generation for SANs – FICON Express2 page 22 A New Generation of zSeries LAN Adapters Open Systems Adapter-Express2 page 24 Open Systems Adapter-Express Features (OSA-Express) page 27 HiperSockets page 31 Cryptography page 33 Availability page
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• Resilient: It can handle the ups and downs of the global zSeries Overview market, and manage changes and threats with consis- Technology has always accelerated the pace of change. tent availability, security and privacy – around the world, New technologies enable new ways of doing business, around the clock. shifting markets, changing customer expectations, redefi n- ing business models. Each major enhancement to technol- To support an on demand business, the IT infrastructure ogy present
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The variable data center needs to be able to respond to The New zSeries from IBM the ever changing demands that occur when you sup- IBM’s ongoing investment in zSeries technology produced port multiple diverse workloads as a single entity. It must a re-invention of the zSeries server — the z990 which was respond to maintain the quality of service required and the developed at a cost in excess of $1 Billion. The new tech- cost of utilizing the resources must refl ect the changing nology introdu
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z/Architecture ™ The zSeries is based on the z/Architecture , which is • 64-bit operands and general registers are used for all Cryptographic instructions designed to reduce bottlenecks associated with the lack of • The implementation of 64-bit z/Architecture can help addressable memory and automatically directs resources reduce problems associated with lack of addressable to priority work through Intelligent Resource Director (IRD). memory by making the addressing capability virtually T
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IBM ^ zSeries 890 IBM ^ zSeries is the enterprise class e-business Operating System ESA/390 z/Arch Compati Exploita server optimized for integration, transactions and data (31-bit) (64-bit) bility tion ® 3 of the next generation e-business world. In implement- OS/390 2.10 (support ended) Yes Yes Yes No 3 ing the z/Architecture with new technology solutions, the z/OS 1.2 (
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e-business Java workloads on the same server as your model designation. Conceptually, zAAPs are very similar to database, helping to simplify and reduce the infrastructure a System Assist Processor (SAP); they cannot execute an required for Web applications while helping to lower your Initial Program Load and only assist the general purpose overall total cost of ownership. CPs for the execution of Java programming. Moreover, IBM does not impose software charges on zAAP capacity. zAAPs
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As with the z990, an improvement to the I/O subsystem MultiChip module. The differences are minor. With fewer has been introduced on the z890 to “break the barrier” functional processors and a slower cycle time less power of the 256 CHPIDs per Channel Subsystem. Horizontal is required for the z890 MCM enabling air cooling. The growth is provided by allowing the defi nition of two Logical air cooled z890 MCM uses approximately 450 Watts Channel SubSystems (LCSSs) each capable of supporting com
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(CUoD), Customer Initiated Upgrades (CIU), and the ability ups and operations. Any unused PUs can be utilized as spares. The inactive PUs on the MCM are available to be to add CPs, ICFs, IFLs and zAAPs dynamically provid- characterized as either Central Processors (CPs), Internal ing nondisruptive upgrade of processing capability. Also, the ability to add CPs lets a z890 with spare PU capacity Coupling Facility (ICF) processors for Coupling Facility applications, Integrated Facility Linux (
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Model A04 z890 Family Models z890 Performance Comparison The z890 offers a single model, the A04 and supports a wide performance range from sub uni models up to a 4- way multiprocessor. The z890 offers 7 general purpose CP sizes (1 full performance plus 6 sub uni's). Each engine size is available in 2-way, 3-way and 4-way multiproces- sors. Seven engine sizes across 4 engines gives outstand- ing capacity granularity over the 28 capacity settings. Capacity 110 120 130 140 150 160 170 210 220 2
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IFL or ICF is installed on the permanent machine with the Although the hardware upgrade does not need a POR/ restrictions that a) additional engines, of each type, cannot IML if there is a change in engine size, a z/OS IPL will be exceed the number of installed permanent engines of required. that same type and b) adding engines cannot exceed the On/Off CoD is delivered through the Customer Initiated physical limit of the installed machine. Upgrade (CIU) facility. To participate in this offer
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Although Capacity BackUp (CBU) and On/Off Capacity an On/Off CoD order. On/Off CoD tests which do exceed on Demand can both reside on the server, the activation 24 hours in duration will be treated in their entirety as bill- of On/Off Capacity on Demand is mutually exclusive with able On/Off CoD upgrades. In addition to validating the CBU and no physical hardware upgrade will be supported On/Off CoD function within your environment, you may while On/Off Capacity on Demand is active. choo
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z890 Performance Comparisons The IBM z890 is the latest member of the zSeries family. performance levels, z890 offers from 1-4 Central Proces- The design of the z890 is a continuation of the major sors each with 7 different “dial points” (28 choices in all) change in the direction of the zSeries platform started with and resource management within the system, it is expected the IBM ^ zSeries 990. The implementation of the that there will be a large performance variability than has superscalar
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z890 I/O Subsystem MSUs and SRM constants. The z990 default mixed work- The z890 contains an I/O subsystem infrastructure which load will be composed of equal amounts of fi ve workloads, uses an I/O cage that provides 28 I/O slots. Each I/O Trade2-EJB, WEB/CICS/DB2, IMS, CB84 and CBW2. Addi- cage has seven I/O domains with four features in each I/O tionally, the z890/z990 LSPR will rate all z/Architecture pro- domain, and each domain has one STI for connectivity to cessors running in LPAR mo
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z890 Logical Channel SubSystems (LCSSs) and support for feature in the I/O cage. CHPID numbers are no longer pre- Greater than 15 Logical Partitions (LPARs) assigned and it is now a customer responsibility to do this The z890 I/O subsystem is a breakthrough in connectivity assignment via IOCP/HCD. CHPID assignment is done by by providing up to 2 LCSS per server, and each LCSS can associating a CHPID number with a physical location, the support up to 256 CHPIDs when exploitation software is
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z890 Channels and I/O Connectivity Normal Multiple Image Facility (MIF) sharing of a chan- A z890 has a total of 28 I/O slots in one I/O cage. These nel is confi ned to a single LCSS. The z890 supports the slots can be plugged with a mixture of cards providing spanning of the channels types: IC, HiperSockets, FICON the I/O connectivity, networking connectivity, coupling and Express, FICON Express2, OSA-Express, OSA-Express2, cryptographic capability of the server. ISC-3s and ICBs (ICB-3 and IC
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long wavelength (LX) and short wavelength (SX) features, peer mode up to an unrepeated distance of 10 km (6.2 miles). though the LX and SX cannot be intermixed on a single The mode is selected for each link via the CHPID type in the feature. Note, the maximum quantity of FICON Express, IOCDS. ISC-3 links are ordered in increments of one. It is rec- OSA-Express, PCICA, and PCIXCC features in combina- ommended that an initial order for ISC-3 include two links. tion cannot exceed 20 features per
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Fibre Channel Connectivity and 256 (resell of the CNT (FC/9000 Directors) are 64-, The on demand operating environment requires fast data 128- and 256-port high availability directors. All have fea- access, continuous data availability, and improved fl exibil- tures that provide interface support to allow the unit to be ity all with lower cost of ownership. zSeries Fibre Channel managed by System Automation for OS/390. The McDATA Connectivity can help you achieve these goals. Intrepid 6000 S
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is the case with ESCON), but will also support multiple high availability, extended distance connectivity, and (par- device defi nitions. For example, ESCON channels that are ticularly with the implementation of 2 Gbps Inter Switch dedicated as CTC cannot communicate with any other Links), has the potential for fi ber infrastructure cost sav- device, whereas native FICON (FC) channels are not dedi- ings by reducing the number of channels for interconnect- cated to CTC only. Native can support bot
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attachability means that customers have more choices resources and infrastructure. Further savings may be real- for new storage solutions, or may have the ability to use ized in the reduction of the number of fi ber optic cabling existing storage devices, thus helping to leverage exist- and director ports. ing investments and lower total cost of ownership for their When confi gured as FCP CHPID type, the z890 FICON Linux implementation. Express features support the industry standard interface
