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January 2005 IBM ^ zSeries 890 and z/OS Reference Guide.
2 T able of Contents z/Ar chitectur e 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 Connectiv.
3 zSeries Overview T echnology has always accelerated the pace of change. New technologies enable new ways of doing business, shifting markets, changing customer expectations, redefi n- ing business models. Each major enhancement to technol- ogy presents opportunities.
4 The variable data center needs to be able to respond to the ever changing demands that occur when you sup- port multiple diverse workloads as a single entity . It must respond to maintain the quality of service r equired and the cost of utilizing the resour ces must refl ect the changing environment.
5 z/Arc hitecture The zSeries is based on the z/Architectur e ™ , which is designed to reduce bottlenecks associated with the lack of addressable memory and automatically directs r esources to priority work through Intelligent Resour ce Director (IRD).
6 Operating System ESA/390 z/Arch Compati Exploita (31-bit) (64-bit) bility tion OS/390 ® 2.10 (support ended) Y es Y es Y es 3 No z/OS 1.2 (support ended) No Y es Y es 3 No z/OS and z/OS.e 1.3 No Y es Y es 3 No z/OS and z/OS.e 1.4 No Y es Y es 3 Ye s z/OS and z/OS.
7 e-business Java workloads on the same server as your database, helping to simplify and reduce the infrastructur e requir ed for Web applications while helping to lower your overall total cost of ownership.
8 As with the z990, an improvement to the I/O subsystem has been introduced on the z890 to “br eak the barrier” of the 256 CHPIDs per Channel Subsystem. Horizontal growth is pr ovided by allowing the defi nition of two Logical Channel SubSystems (LCSSs) each capable of supporting up to 256 CHPIDs, giving a total of 512 CHPIDs per z890 server .
9 ups and operations. Any unused PUs can be utilized as spares. The inactive PUs on the MCM ar e available to be characterized as either Central Processors (CPs), Internal Coupling Facility (ICF) proc.
10 The z890 offers a single model, the A04 and supports a wide perfor mance range from sub uni models up to a 4- way multiprocessor . The z890 offers 7 general purpose CP sizes (1 full perfor mance plus 6 sub uni's). Each engine size is available in 2-way , 3-way and 4-way multiproces- sors.
11 IFL or ICF is installed on the permanent machine with the restrictions that a) additional engines, of each type, cannot exceed the number of installed permanent engines of that same type and b) adding engines cannot exceed the physical limit of the installed machine.
12 Although Capacity BackUp (CBU) and On/Off Capacity on Demand can both reside on the server , the activation of On/Off Capacity on Demand is mutually exclusive with CBU and no physical hardwar e upgrade will be supported while On/Off Capacity on Demand is active.
13 The IBM z890 is the latest member of the zSeries family . The design of the z890 is a continuation of the major change in the direction of the zSeries platform started with the IBM ^ zSeries 990.
14 MSUs and SRM constants. The z990 default mixed work- load will be composed of equal amounts of fi ve workloads, T rade2-EJB, WEB/CICS/DB2, IMS, CB84 and CBW2. Addi- tionally , the z890/z990 LSPR will rate all z/Architecture pr o- cessors running in LP AR mode and 64-bit mode.
15 z890 Logical Channel SubSystems (LCSSs) and support for Greater than 15 Logical Partitions (LP ARs) The z890 I/O subsystem is a breakthr ough in connectivity by providing up to 2 LCSS per server , and each LCSS can support up to 256 CHPIDs when exploitation software is installed.
16 Normal Multiple Image Facility (MIF) sharing of a chan- nel is confi ned to a single LCSS. The z890 supports the spanning of the channels types: IC, HiperSockets, FICON Express, FICON Expr ess2, OSA-Express, OSA-Expr ess2, ISC-3s and ICBs (ICB-3 and ICB-4).
17 long wavelength (LX) and short wavelength (SX) features, though the LX and SX cannot be intermixed on a single feature. Note, the maximum quantity of FICON Expr ess, OSA-Express, PCICA, and PCIXCC featur es in combina- tion cannot exceed 20 features per server .
18 The on demand operating environment r equires fast data access, continuous data availability , and improved fl exibil- ity all with lower cost of ownership.
19 is the case with ESCON), but will also support multiple device defi nitions. For example, ESCON channels that ar e dedicated as CTC cannot communicate with any other device, whereas native FICON (FC) channels ar e not dedi- cated to CTC only .
20 attachability means that customers have more choices for new storage solutions, or may have the ability to use existing storage devices, thus helping to leverage exist- ing investments and lower total cost of ownership for their Linux implementation.
21 image. A system confi guration using FCP LUN Access Control may signifi cantly reduce the number of FCP chan- nels (FICON Express featur es) that are needed to pr ovide controlled access to the data on FCP SCSI devices. FCP LUN Access Control complements the zoning and LUN masking schemes that exist in open storage environments.
22 FICON Express2 of fers new packaging with increased connectivity in the same amount of physical space. Increased performance is also possible with FICON Express2. This r efresh of technology can help to satisfy your server consolidation connectivity requir ements, and may help to reduce the number of I/O featur es requir ed for consolidation.
23 Concurrent Update The FICON Express2 SX and LX featur es may be added to an existing z890 concurrently . This concurrent update capability allows you to continue to run workloads through other channels while the new FICON Express2 featur es are being added.
24 A new generation of zSeries LAN adapters is being deliv- ered, as well as a 10 Gigabit Ethernet feature. This update of technology , referred to as OSA-Expr ess2, can help to satisfy the bandwidth demands of your applications.
25 • 640 TCP/IP stacks • Concurrent LIC update • SC Duplex connector • Single mode fi ber (9 micron) • An unrepeated distance of up to 10 km (6.2 miles) Checksum Offl oad is supported in the z/OS, z/OS.e and Linux on zSeries environments. The 10 Gigabit Ethernet (10 GbE) feature does not support auto-negotiation to any other speed.
26 OSA-Express2 concurrent LIC update – an av ailability enhancement The OSA-Express2 featur es have increased memory in comparison to the OSA-Express featur es and are designed to be able to facili.
27 With the introduction of the z890, the OSA-Expr ess Adapter family of Local Area Network (LAN) featur es is offering a maximum of 20 featur es per system, versus the maximum of 12 features per system on prior genera- tions, expanding the z890 balanced solution to increase throughput and r esponsiveness in an on demand oper - ating environment.
28 The new Checksum offl oad support on the 1000BASE-T Ethernet feature, when operating in QDIO mode at gigabit speed, is designed to offl oad z/OS 1.
29 The new Checksum offl oad support on these z890 features is designed to offl oad z/OS 1.5 and Linux TCP/IP stack pr o- cessing of Checksum packet headers for TCP , IP and UDP . NON-QDIO operational mode The OSA-Express 1000BASE-T Ethernet, Fast Ethernet and T oken-Ring also support the non-QDIO mode of operation.
30 Note: OSA-Express 155 A TM and OSA-2 FDDI are no longer supported. If A TM or FDDI support are still requir ed, a multiprotocol switch or r outer with the appropriate net- work interface for example, 1000BASE-T Ether net, GbE LX or GbE SX can be used to provide connectivity between the LAN and the A TM network or FDDI LAN.
31 offl oad). Large send can impr ove per formance by offl oad- ing outbound TCP segmentation processing fr om the host to OSA-Express2 by employing a mor e effi cient memory transfer into OSA-Express2. The z/OS Communications Server support is planned for TCP/IP IPv4 traffi c only and z/OS and z/OS.
32 HiperSockets does not use an external network, therefore, it can free up system and network r esources, helping to reduce attachment cost while impr oving availability and perfor mance.
33 HiperSockets broadcast support for IPv4 packets – Linux, z/OS, z/VM: Internet Protocol V ersion 4 (IPv4) broadcast packets are now supported over HiperSockets internal LANs.
34 and microcode design will support almost all of the past Cryptographic functions that were provided on the zSeries 800 and 900 via the CMOS Cryptographic Coprocessor (CCF) and the PCI Cryptographic Coprocessor (PCICC).
35 A third generation Cryptographic feature – Cr ypto Express2 Crypto Express2 features support for on demand business in a security-rich environment. Crypto Express2 provides the functions of PCICA and PCIXCC in a single feature that is expected to pr ovide improved secur e key and system throughput.
36 – A mixture of both secur e and clear key applications can run on the same Crypto Express2 feature – Based on the increased thr oughput, the ability to con- solidate both secure key and clear k.
37 2048-bit key RSA management support for the PCICC fea- tures on z800 and z900 is transpar ent to the hardwar e and is supported by z/OS, z/OS.e, z/VM, and Linux on zSeries. z/VM and Linux on zSeries offer support for clear key oper - ations only . Refer to the Software requir ements section for further infor mation.
38 z890 Capacity Upgrade on Demand (CUoD) Capacity Upgrade on Demand allows for the nondisruptive addition of additional Central Processor (CP) Capacity , Internal Coupling Facilities (ICFs), Integrated Facility for Linux (IFLs) and/or IBM ^ zSeries Application Assist Processor (zAAP).
39 needs of the larger CBU target machine. When capacity is needed in an emergency , the primar y operation perfor med is activating the emergency CBU confi guration with the reserved PUs added into the confi guration as CPs.
40 T ransparent Sparing z890 offers a 5 PU MCM in the case of pr ocessor failure. If there is a spar e PU available it will be used for transparent sparing.
41 Sparing for Storage Protect K eys : The r obust confi guration of the Storage Protect Keys has been enhanced with chip sparing. Already a triple-array with parity pr otection and voting, the Key structure for z890 has added sparing, simi- lar to Main Memory chip sparing, to fur ther enhance the availability of this critical function.
42 Although there is a signifi cant value in a single footprint and multi-footprint environment with r esource sharing, those customers looking for high availability must move on to a database data sharing confi guration.
43 – ICF Expansion into shared CPs. A CF partition running with dedicated ICFs needing processing capacity beyond what is available with the dedicated CP ICFs, can “grow” into the shar ed pool of application CPs being used to execute zSeries applications on the same server .
44 Parallel Sysplex Coupling Connectivity The Coupling Facilities communicate with z/OS images in the Parallel Sysplex environment over specialized high-speed links. For availability purposes, it is recom- mended that there be at least two links connecting each z/OS image to each CF in a Parallel Sysplex cluster .
45 z890 and z990 Theoretical Maximum Coupling Link Speed • ISC-3. InterSystem Coupling Facility-3 channels provide the connectivity requir ed for resour ce or data sharing between the Coupling Facility and the systems directly attached to it.
46 • IC. The Internal Coupling channel emulates the Coupling links providing connectivity between images within a single server . No hardware is r equired, however a minimum of 2 CHPID numbers must be defi ned in the IOCDS. IC links provide the fastest Parallel Sysplex con- nectivity .
47 devices. With z/OS and the zSeries, paths may be dynami- cally assigned to control units to r efl ect the I/O load. For example, in an environment wher e an installation normally requir es four ch.
48 capacity planning and application stress testing. For mor e information on Parallel Sysplex Professional Services, visit IBM’ s Web site at ibm.com /servers/eserver/zseries/pso/ services.html. GDPS GDPS supports both the synchronous Peer -to-Peer Remote Copy (PPRC) as well as the asynchronous Extended Remote Copy (XRC) forms of remote copy .
49 GPDS/PPRC HyperSwap ™ The GDPS/PPRC HyperSwap function is designed to broaden the continuous availability attributes of GDPS/ PPRC by extending the Parallel Sysplex redundancy to disk subsystems.
50 GDPS/PPRC and GDPS/XRC FlashCopy Support FlashCopy is a point-in-time copy technology that allows point-in-time copies of disk volumes to be made very quickly , with the copies immediately available for read or write access.
51 This innovative disaster recovery solution requir es GDPS, IBM Tivoli System Automation for Multiplatforms, Linux on zSeries, and z/VM 5.1 and is designed to help anticipate and rapidly respond to business objectives and technical requir ements while maintaining high system availability .
52 GDPS is discussed in a white paper available at ibm.com / server/eserver/zseries/pso/library .html. GDPS is a service offering of IBM Global Services.
53 Key attributes can include • No single point of failure • Fast, automatic recovery – CF: rebuild in surviving CF – CEC, z/OS, OS/390: restart subsystems on surviving image – TM/DBMS: rest.
54 The support is implemented using an inter nal commu nica- tions method – SCLP – which enables the operating system to communicate with the HMC. The software support was made available in z/VM V ersion 4 Release 4. An update for Linux will be made available to IBM Linux Distribution Partners.
55 – Tivoli NetView for z/OS V ersion 5.1 – Tivoli Remote Control V ersion 3.8 – Tivoli Risk Manager V ersion 4.1 and 3.8 – Tivoli Software Distribution V ersion 4.0 – Tivoli Storage Manager ™ V ersions 5.1.5 and 5.1 – Tivoli Storage Manager Client V ersion 4.
56 OSA-Express Enhancements for Linux A new function, Checksum Offl oad, of fered for the new OSA-Express GbE and 1000BASE-T Ethernet features, is being introduced for the Linux on zSeries and z/OS environments.
57 via www .software. ibm.com /developerworks/opensource/ linux390/index.shtm. IBM is working with its distribution partners to provide these functions in future distribution releases.
58 Maximum of 512 CHPIDs; One I/O cages: 28 I/O slots Per System Feature Minimum Maximum Maximum Ports/ Purchase Features I/O Slots Connections Channels/ Increments used by Increments Features per Fea.
59 A-Frame Single I/O cage I/O Cage CEC Cryptographic Features PCICA 1, 2 PCIXCC 2 Minimum 0 0 Maximum 2 3 4 4 1. Max two PCICA features per system 2. Max eight PCICA and PCIXCC features per system 3.
60 z890 Power/Heating/Cooling System Power Consumption (50/60 Hz, KV A) Model / Confi g 1 I/O Cage A04 1.5 - 4.7 Note: Assumes 60 amp cords System Cooling (Air Flow Rate - CFM) Model / Confi g 1 I/O Cage A04 640 Note: Assumes chilled underfl oor temperatur e of 24 O C Heat Output (kBTU/hr) Model / Confi g 1 I/O Cage A04 5.
61 Fiber -Optic Cabling and System Connectivity In the world of open systems and Storage Area Networks (SANs), the changing requir ements for fi ber -optic cabling are dir ectly related to the system har dware confi guration.
62 Fiber Quick Connect (FQC) : FQC, a zSeries confi guration option, helps reduce the cable bulk associated with the installation of potentially 240 (z800) to 256 (z900) to 420 (z890/z990) ESCON channels in one I/O cage.
63 This integrated set of system services in z/OS can help a customer to focus on extracting the maximum business value from the z/OS installation. The system manages the workload, program libraries and I/O devices.
64 goals, WLM can adjust processor capacity , channel paths, and I/O requests acr oss LP ARs without human intervention. IRD assigns resour ces to the application; the applica- tion is not assigned to the resour ce.
65 Applications that can be written to 64-bit virtual storage have signifi cantly larger addr essability to data. With z/OS 1.2, assembler programs can obtain virtual storage above 2 GB for storing and manipulating data. This 64-bit support is used by DB2 V8 and other middleware.
66 BCP includes the I/O confi guration pr ogram (IOCP), the workload manager (WLM), systems management facilities (SMF), the z/OS UNIX Systems Services kernel, and sup- port for Unicode.
67 z/OS 1.5 can help signifi cantly enhance application backup with enhancements to DFSMShsm to utilize volume level fast replication. The fast backup is designed to exploit FlashCopy and the virtual concurrent copy capa- bility of IBM T otalStorage Enterprise Storage Server and IBM RAMAC Virtual Array (RV A) respectively .
68 System Management Services z/OS Version 1 Release 6 base elements and components HCD SMP/E V3 Managed System Infrastructure for Setup Managed System Infrastructure for Operations z/OS Version 1 Rel.
69 SMP/E SMP/E provides the ability to install softwar e products and service either from DASD or tape, or dir ectly from a network source, such as the Internet. By installing directly from a network sour ce, SMP/E is enabling a more seam- less integration of electronic softwar e delivery and instal- lation.
70 Once a user is authenticated, RACF and the resour ce managers control the interaction between that user and the objects it tries to gain access to. These objects include: commands, datasets, programs, tape volumes, terminals and objects that you defi ne.
71 z/OS SSL support includes the ability for applications to create multiple SSL envir onments within a single process. An application can now modify environment attributes without terminating any SSL sessions already underway . • IPv6 Support: This suppor t allows System SSL to be used in an IPv6 network confi guration.
72 signatures, and the management of cryptographic keys. These functions are pr ovided via APIs intended to deliver the highly scalable and available security features of z/OS and the zSeries servers.
73 Application Enablement Services z/OS Version 1 Release 6 base elements Language Environment 2 Run-Time Library Extensions z/OS Version 1 Release 6 optional priced features C/C++ without Debug T ool DFSORT GDDM ® -PGF V2R1.3 1 GDDM-RE90 V3R2 1 HLASM T oolkit V1R4 1.
74 Jav a SDK for z/OS, Java 2 T echnology Edition, 1.4 provides a full-function Software Development Kit (SDK) at the Java 2 technology level, compliant with the Sun SDK 1.4 APIs. With SDK for z/OS, Java 2 T echnology Edition, V1.4, cus- tomers can: • T est and deploy Java applications at the Java 2 SDK 1.
75 Dynamic Vir tual IP Address T akeover VIP A repr esents an IP address that is not tied to a specifi c hardwar e adapter address. The benefi t can be that if an adapter fails, the IP protocol can fi nd an alternate path to the same software, be it the TCP/IP services on a zSeries server or an application.
76 HiperSockets • HiperSockets, introduced in z/OS 1.2, pr ovides very high-speed, low latency TCP/IP data communications across LP ARs resident within the same zSeries server .
77 cross-network management of data and applications, and the exploitation of traditional zSeries system strengths in an open environment. Highlights • X/Open UNIX 95 Branded • Permanent z/OS UNIX Ker nel (restart capability pro- vided in z/OS 1.
78 – File system quota (maximum fi le system size). With zFS the fi le system quota can be increased with a simple administrative command. – Can improve failur e recovery . zFS per forms asynchro- nous writes to disk and does not wait for a synch inter - val to begin writes.
79 The IBM HTTP Server offers HTTP 1.1 compliance, support for Java technology , and the ability to manage Inter net processing thr ough the Workload Manager (WLM).
80 • The Print Interface suppor ts print submission from appli- cations running in UNIX System Services (USS), from Windows users via native Windows SMB, from applica- tions on other servers, and over the Internet using IPP . • Data stream transforms let you print AFP ™ applications on printers using PCL, PostScript or PDF .
81 Installation Considerations CustomPac is a suite of services designed to help you effi ciently install, migrate and maintain a z/OS system. It can also help with migrating and maintaining z/OS system- related pr oducts and/or third parties’ software vendor products.
82 The following table describes the migration/coexistence supported releases. The release shown in column 1 is the highest release running in a multisystem confi guration. Migration/Coexistence Supported Releases (OS/390 & z/OS) Release Migration/Coexistence Release z/OS R4 {z/OS.
83 Order z/OS through the Internet ShopzSeries (formerly SHOPS390) provides an easy way to plan and order your z/OS ServerPac or CBPDO. It will analyze your current installation, determine the correct product migration, and pr esent your new confi guration based on z/OS.
84 z/VM Version 3 (V3) z/VM offers a new technology base for customers look- ing to use IBM Virtual Machine technology on one of the industry’ s best-of-breed server platform, zSeries. When z/VM is running on a zSeries server , it’ s possible to run 64- bit capable OS/390 2.
85 z/VM provides the capability to account for the use of system resour ces by virtual machines, including those run- ning Linux. Accounting recor ds are pr oduced that track a virtual machine’ s us.
86 as z/OS, z/OS.e, OS/390, TPF , VSE/ESA, CMS, and Linux on zSeries and S/390. The ability to support multiple machine images and architectur es enables z/VM to run multiple production and test versions of zSeries and S/390 operating systems, all on the same system.
87 – viewing of perfor mance monitor data using either Web browsers or PC-based 3270 emulator graphics The toolkit also provides the capability to monitor TCP/IP for z/VM, as well as to process Linux performance data. Application Enablement • C/C++ for z/VM Compiler (5654-A22) CMS will host the new C/C++ for z/VM compiler (5654- A22).
88 The guest LAN support provided in z/VM V4.2 simulates the HiperSockets function for communication among virtual machines without the need for real IQD channels, much as VM simulates channel-to-channel adapters for communication among virtual machines without the need for ESCON, FICON, or other real channel-to-channel con- nections.
89 Engine-based V alue Unit Pricing z/VM V5 introduced engine-based V alue Unit Pricing which replaces the per -engine pricing model that is available with z/VM V4 as well as providing a lower entry price.
90 (virtual images). Although these APIs are primarily intended for managing Linux virtual images, they can be used to manage many types of z/VM virtual machine. All enhancements to the APIs in z/VM V5.1 have been imple- mented using V ersion 2 (V2) of the RPC server .
91 T echnology Exploitation • z/VM 5.1 supports the z890 and the z990 including: – Four Logical Channel SubSystems (LCSSs) on the z990 and two on the z890 – T ransparent sharing of internal and .
92 VSE/ESA VSE clients with growing cor e VSE workloads, growing Linux workloads, or both will fi nd the z890 to be a r obust, cost-effective server solution and a unique opportunity to reduce IT cost though infrastructur e simplifi cation.
93 T o learn more Visit the zSeries W orld Wide Web site at ibm.com /eserver/ zseries or call IBM DIRECT at 1 800 IBM-CALL in the U.S. and Canada. Australia 132 426 Austria 0660.
94 Copyright IBM Corporation 2005 Integrated Marketing Communications, Server Group Route 100 Somers, NY 10589 U.S.A. Produced in the United States of America 01/05 All Rights Reserved References in this publication to IBM pr oducts or services do not imply that IBM intends to make them available in every countr y in which IBM operates.
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