IBM Z10 EC manual Ficon Support for Cascaded Directors, FCP Channels

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FICON Support for Cascaded Directors

Native FICON (FC) channels support cascaded directors. This support is for a single hop confi guration only. Two- director cascading requires a single vendor high integrity fabric. Directors must be from the same vendor since cas- caded architecture implementations can be unique. This type of cascaded support is important for disaster recov- ery and business continuity solutions because it can help provide high availability, extended distance connectivity, and (particularly with the implementation of 2 Gb/sec Inter Switch Links) has the potential for fi ber infrastructure cost savings by reducing the number of channels for intercon- necting the two sites.

FICON cascaded directors have the added value of high integrity connectivity. Integrity features introduced within the FICON Express channel and the FICON cascaded switch fabric to aid in the detection and reporting of any miscabling actions occurring within the fabric can prevent data from being delivered to the wrong end point.

FCP Channels

z10 EC supports FCP channels, switches and FCP/ SCSI disks with full fabric connectivity under Linux on System z and z/VM 5.2 (or later) for Linux as a guest under z/VM, under z/VM 5.2 (or later), and under z/VSE 3.1 for system

usage including install and IPL. Support for FCP devices means that z10 EC servers are capable of attaching to select FCP-attached SCSI devices and may access these devices from Linux on z10 EC and z/VSE. This expanded attachability means that enterprises have more choices for new storage solutions, or may have the ability to use existing storage devices, thus leveraging existing invest- ments and lowering total cost of ownership for their Linux implementations.

The same FICON features used for native FICON chan- nels can be defi ned to be used for Fibre Channel Protocol (FCP) channels. FCP channels are defi ned as CHPID type FCP. The 4 Gb/sec capability on the FICON Express4 channel means that 4 Gb/sec link data rates are available for FCP channels as well.

FCP – increased performance for small block sizes

The Fibre Channel Protocol (FCP) Licensed Internal Code has been modifi ed to help provide increased I/O operations per second for small block sizes. With FICON Express4, there may be up to 57,000 I/O operations per second (all reads, all writes, or a mix of reads and writes), an 80% increase compared to System z9. These results are achieved in a laboratory environment using one channel confi gured as CHPID type FCP with no other processing occurring and do not represent actual fi eld measurements. A signifi cant increase in I/O operations per second for small block sizes can also be expected with FICON Express2.

This FCP performance improvement is transparent to operating systems that support FCP, and applies to all the FICON Express4 and FICON Express2 features when confi gured as CHPID type FCP, communicating with SCSI devices.

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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 VSE TPFLinux 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 upgradesZ10 EC Performance Large System Performance ReferenceCPU 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 OperationFicon Support for Cascaded Directors FCP ChannelsFCP 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 VirtualizationFeature Infrastructure Ports per OSA-Express3 Ethernet features Summary of benefitsPort 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 CCLOSA Integrated Console Controller Remove L2/L3 LPAR-to-LPAR RestrictionOSA/SF Virtual MAC and Vlan id Display Capability HiperSockets HiperSockets Enhancement for zIIP Exploitation Security Cryptography Can Do IT securelyCP 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 Loading of Initial ATM Keys Remote Key Loading BenefitsImproved 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 RASAvailability Functions Hardware System Area HSAEnhanced 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 DuplexCoupling Facility Configuration Alternatives System-Managed CF Structure DuplexingParallel Sysplex Coupling Connectivity Coupling Connectivity for Parallel Sysplex Introducing long reach InfiniBand coupling linksZ10 EC Max Z10 Coupling Link OptionsTime synchronization and time accuracy on z10 EC Server Time Protocol STPPreview Improved STP System Management with Continuous availability of NTP servers used as Exter Enhanced Network Time Protocol NTP client supportEnhanced STP recovery when Internal Battery Feature NTP server on Hardware Management Console HMCApplication 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 Publications Following Redbook publications are available nowResource Link ZSO03018-USEN-02
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