IBM Z10 EC manual Coupling Facility Control Code Cfcc Level

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be dynamically routed to the z/OS image most capable of handling the work. This dynamic workload balancing, along with the capability to have read/write access data from any- where in the Parallel Sysplex cluster, provides scalability and availability. When confi gured properly, a Parallel Sys- plex cluster is designed with no single point of failure and can provide customers with near continuous application availability over planned and unplanned outages.

With the introduction of the z10 EC, we have the concept of n-2 on the hardware as well as the software. The z10 EC participates in a Sysplex with System z10 BC, System z9, z990 and z890 only and currently supports z/OS 1.8 and higher.

For detailed information on IBM’s Parallel Sysplex technol- ogy, visit our Parallel Sysplex home page at http://www- 03.ibm.com/systems/z/pso/.

Coupling Facility Control Code (CFCC) Level 16

CFCC Level 16 is being made available on the IBM System z10 EC.

Improved service time with Coupling Facility Duplex-

ing enhancements: Prior to Coupling Facility Control Code (CFCC) Level 16, System-Managed Coupling Facility (CF) Structure Duplexing required two duplexing protocol exchanges to occur synchronously during pro- cessing of each duplexed structure request. CFCC Level 16 allows one of these protocol exchanges to complete asynchronously. This allows faster duplexed request ser- vice time, with more benefi ts when the Coupling Facilities are further apart, such as in a multi-site Parallel Sysplex environment.

List notification improvements: Prior to CFCC Level 16, when a shared queue (subsidiary list) changed state from empty to non-empty, the CF would notify ALL active con- nectors. The fi rst one to respond would process the new message, but when the others tried to do the same, they would fi nd nothing, incurring additional overhead.

CFCC Level 16 can help improve the effi ciency of coupling communications for IMS Shared Queue and WebSphere MQ Shared Queue environments. The Coupling Facility notifi es only one connector in a sequential fashion. If the shared queue is processed within a fi xed period of time, the other connectors do not need to be notifi ed, saving the cost of the false scheduling. If a shared queue is not read within the time limit, then the other connectors are notifi ed as they were prior to CFCC Level 16.

When migrating CF levels, lock, list and cache structure sizes might need to be increased to support new function. For example, when you upgrade from CFCC Level 15 to Level 16 the required size of the structure might increase. This adjustment can have an impact when the system allocates structures or copies structures from one coupling facility to another at different CF levels.

The coupling facility structure sizer tool can size struc- tures for you and takes into account the amount of space needed for the current CFCC levels.

Access the tool at: http://www.ibm.com/servers/eserver/ zseries/cfsizer/.

CFCC Level 16 is exclusive to System z10 and is sup- ported by z/OS and z/VM for guest exploitation.

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Contents IBM System z10 Enterprise Class z10 EC Reference Guide Table of Contents IBM System z10 Enterprise Class z10 EC Overview Specialty engines offer an attractive alternative Just-in-time deployment of IT resourcesNumerical computing on the chip Order of introductionLiberating your assets with System z ArchitectureEvolving for your business Z10 EC ArchitecturePage Commitment to system integrity Page TPF VSELinux on System z Operating System ESA/390 Z10 ECPage Page Z10 EC Design and Technology Z10 EC Model Z10 EC Base and Sub-capacity Offerings Z10 EC model upgradesLarge System Performance Reference Z10 EC PerformanceCPU Measurement Facility System I/O Configuration Analyzer Z10 EC I/O SubsystemZ10 EC Channels and I/O Connectivity Ficon Express4 and Ficon Express2 Performance Concurrent UpdateSupport of Spanned Channels and Logical Partitions Modes of OperationFCP Channels Ficon Support for Cascaded DirectorsFCP increased performance for small block sizes FCP Full fabric connectivity Scsi IPL now a base functionFicon and FCP for connectivity to disk, tape, and printers Platform and name server registration in Ficon channelIt will register Program Directed re-IPL NPort ID VirtualizationOSA-Express3 Ethernet features Summary of benefits Feature Infrastructure Ports perPort density or granularity OSA-Express2 availability FeaturesPurpose/Traffic TypeOSA-Express3 Gigabit Ethernet LX OSA-Express3 10 Gigabit Ethernet SROSA-Express3 Gigabit Ethernet SX Four-port exploitation on OSA-Express3 GbE SX and LXDynamic LAN idle for z/OS Network Traffic AnalyzerLayer 2 transport mode When would it be used? Link aggregation for z/VM in Layer 2 modeOSA Layer 3 Virtual MAC for z/OS Direct Memory Access DMAHardware data router IBM Communication Controller for Linux CCLRemove L2/L3 LPAR-to-LPAR Restriction OSA Integrated Console ControllerOSA/SF Virtual MAC and Vlan id Display Capability HiperSockets HiperSockets Enhancement for zIIP Exploitation Can Do IT securely Security CryptographyCP Assist for Cryptographic Function Cpacf Configurable Crypto Express2 Secure Key AES Dynamically add crypto to a logical partitionEnhancement with TKE 5.3 LIC TKE 5.3 workstation and support for Smart Card ReaderTKE additional smart cards System z10 EC cryptographic migrationRemote Key Loading Benefits Remote Loading of Initial ATM KeysImproved Key Exchange With Non-CCA Cryptographic Systems Capacity on Demand Temporary Capacity On Demand CapabilitiesAmendment for CBU Tests Capacity Provisioning System z9 System z10 OS Capacity provisioning allows you to set up rulesRAS Design Focus Reliability, Availability, and Serviceability RASHardware System Area HSA Availability FunctionsEnhanced Book Availability Concurrent Physical Memory Replacement Concurrent Physical Memory UpgradeConcurrent Defective Book Replacement Enhanced Driver MaintenancePlan Ahead Memory Transparent SparingPower Monitoring Service EnhancementsPower Estimation Tool Environmental EnhancementsIBM Systems Director Active Energy Manager Parallel Sysplex Cluster TechnologyCoupling Facility Control Code Cfcc Level Improved service time with Coupling Facility DuplexSystem-Managed CF Structure Duplexing Coupling Facility Configuration AlternativesParallel Sysplex Coupling Connectivity Coupling Connectivity for Parallel Sysplex Introducing long reach InfiniBand coupling linksZ10 EC Max Z10 Coupling Link OptionsServer Time Protocol STP Time synchronization and time accuracy on z10 ECPreview Improved STP System Management with Continuous availability of NTP servers used as Exter Enhanced Network Time Protocol NTP client supportNTP server on Hardware Management Console HMC Enhanced STP recovery when Internal Battery FeatureApplication Programming Interface API to automate Internal Battery Feature Recommendation Family Machine Type HMC System SupportInternet Protocol, Version 6 IPv6 HMC/SE Console MessengerHMC z/VM Tower systems management enhancements Gdps Implementation Services for Parallel SysplexFiber Quick Connect for Ficon LX Environments Z10 EC Dimensions Z9 EC Number of Frames 2 Frame Z10 EC Physical Characteristics Z10 EC Configuration DetailZ10 EC Environmentals Model O Cage Model O CageOSA-Express3 and OSA-Express2 Features Min Max Processor Unit Features ModelCPs IFLs ICFsGeneral Information Z9 BC Coupling Facility CF Level of SupportStatement of Direction Following Redbook publications are available now PublicationsResource Link ZSO03018-USEN-02
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