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IBM SG24-5131-00 manual Termination

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SCSI-2 Differential Fast/Wide Adapter/A and Enhanced SCSI-2 Differential Fast/Wide Adapter/A) are shown in Figure 12 and Figure 13 respectively.

	Termination
P/N 43G0176	Resistor
P/N 43G0176	Blocks
	4-2

Figure 12. Termination on the SCSI-2 Differential Controller

		Termination
Internal 16-bit SE	Internal 8-bit SE	Resistor
Internal 16-bit SE	Internal 8-bit SE	Blocks
P/N 56G7315
		4-6

Figure 13. Termination on the SCSI-2 Differential Fast/Wide Adapters

78 IBM Certification Study Guide AIX HACMP

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IBM SG24-5131-00 manual Termination

Contents

AIX Hacmp Page AIX Hacmp Take Note Contents Iv IBM Certification Study Guide AIX Hacmp Page Vi IBM Certification Study Guide AIX Hacmp Appendix A. Special Notices ViiViii IBM Certification Study Guide AIX Hacmp Figures IBM Certification Study Guide AIX Hacmp Tables Xii IBM Certification Study Guide AIX Hacmp Preface XiiiTeam That Wrote This Redbook Comments Welcome Your comments are important to usXvi IBM Certification Study Guide AIX Hacmp Certification Overview IBM Certified Specialist AIX HacmpCertification Requirement two Tests Recommended PrerequisitesPreinstallation Certification Exam ObjectivesHacmp Implementation System Management Certification Education Courses Following table outlines information about the next course IBM Certification Study Guide AIX Hacmp Cluster Planning Cluster NodesCPU Options Cluster Node Considerations Cluster Planning Switch adapter is onboard and does not need an extra slot Cluster Networks 1 TCP/IP NetworksSupported TCP/IP Network Types Slip Socc Special Network ConsiderationsCluster Planning Non-TCPIP Networks Supported Non-TCP/IP Network TypesSpecial Considerations Serial RS232Cluster Disks SSA DisksTarget-mode Scsi Target-mode SSAHost Specification Disk Capacities 1.2 Supported and Non-Supported AdaptersRules for SSA Loops Cluster Planning RAID vs. Non-RAID RAID Technology RAID LevelRAID Levels 2 RAID on the 7133 Disk Subsystem Advantages Scsi Disks DisksSubsystems Advantages Disadvantages Resource Planning Resource Group OptionsCluster Planning Hot-Standby Configuration Shared LVM ComponentsRotating Standby Configuration Hot-Standby ConfigurationMutual Takeover Configuration Mutual Takeover ConfigurationThird-Party Takeover Configuration Third-Party Takeover ConfigurationConcurrent Disk Access Configurations IP Address TakeoverNetwork Topology Single NetworkDual Network Point-to-Point ConnectionNetworks Network NameNetwork Attribute Network Adapters Adapter LabelAdapter Function Cluster Planning Defining Hardware Addresses NFS Exports and NFS Mounts Application PlanningPerformance Requirements Application Startup and Shutdown RoutinesLicensing Methods Coexistence with other ApplicationsCritical/Non-Critical Prioritizations Customization Planning Event CustomizationSpecial Application Requirements Event NotificationError Notification Predictive Event Error CorrectionSample Screen for Add a Notification Method Notification Application FailureUser ID Planning Cluster User and Group IDsCluster Passwords Home Directories on Shared VolumesUser Home Directory Planning NFS-Mounted Home DirectoriesNFS-Mounted Home Directories on Shared Volumes Cluster Node Setup Adapter Slot PlacementCluster Hardware and Software Preparation Rootvg MirroringIBM Certification Study Guide AIX Hacmp Procedure This is so that the Quorum OFF functionality takes effect AIX Prerequisite LPPs Necessary Apar FixesAIX Parameter Settings 4.1 I/O PacingChecking Network Option Settings Cron and NIS Considerations Editing the /.rhosts File Network Connection and Testing Cabling ConsiderationsConnecting Networks to a Hub IP Addresses and SubnetsTesting Non TCP/IP Networks Configuring RS232 Configuring Target Mode ScsiConfiguring Target Mode SSA Testing RS232 and Target Mode NetworksCluster Disk Setup 1 SSACabling AIX Configuration Adapter RouterAdapter Definitions Disk DefinitionsDiagnostics #lsdev -Cc disk grep SSAUpgrade Instructions Microcode LoadingCluster Hardware and Software Preparation Configuring a RAID on SSA Disks ScsiConnecting RAID Subsystems Scsi AdaptersRAID Enclosures 110 RAIDiant Arrays Connected on Two Shared 8-Bit Scsi Buses Cluster Hardware and Software Preparation #2416 Adapter Scsi ID and Termination change Termination F1=Help F2=Refresh # chdev -l scsi1 -a id=6 -P Shared LVM Component Configuration Change/Show Characteristics of a Scsi AdapterCreating VGs for Concurrent Access Creating Shared VGsCreating Non-Concurrent VGs Physical Volume Names Renaming a jfslog and Logical Volumes on the Source Node Creating Shared LVs and File SystemsAdding Copies to Logical Volume on the Source Node Testing a File System Mirroring StrategiesImporting to Other Nodes Changing a Volume Group’s Startup Status Quorum Quorum at Vary OnQuorum Enabled Quorum DisabledQuorum after Vary On Disabling and Enabling QuorumQuorum in Non-Concurrent Access Configurations Quorum in Concurrent Access ConfigurationsAlternate Method TaskGuide Forcing a VaryonStarting the TaskGuide IBM Certification Study Guide AIX Hacmp Hacmp Installation and Cluster Definition Installing HacmpFirst Time Installs Cluster.base.server.utils Cluster.hc Install Server Nodes Rebooting ServersUpgrading From a Previous Version Upgrade AIX on One Node Install Hacmp 4.3 for AIX on Node a Check Upgraded ConfigurationClient-only Migration Defining Cluster Topology Defining the Cluster Defining NodesDefining Adapters Hacmp Installation and Cluster Definition Node Name Configuring Network Modules Adding or Changing Adapters after the Initial ConfigurationSynchronizing the Cluster Definition Across Nodes Ignore Cluster Configuring Resource Groups Defining ResourcesConfiguring Resources for Resource Groups Service IP LabelConfiguring Run-Time Parameters Defining Application ServersInitial Testing ClverifySynchronizing Cluster Resources Initial Startup Takeover and ReintegrationCluster Snapshot Applying a Cluster Snapshot Hacmp Installation and Cluster Definition IBM Certification Study Guide AIX Hacmp Cluster Customization Predefined Cluster EventsAcquireserviceaddr AcquiretakeoveraddrGetdiskvgfs NodeupremoteReleaseserviceaddr Sequence of nodedown EventsNodedownlocal NodedownremoteStartserver Network Events NetworkdownNetworkup NetworkupcompleteConfigtoolong ReconfigtopologystartNetwork Adapter Events SwapadapterEvent Recovery and Retry Configuration Resources Cluster Events Change/Show ClusterPre- and Post-Event Processing Event NotificationEvent Emulator Network Modules/Topology Services and Group Services Creating Shared Volume Groups NFS considerationsExporting NFS File Systems NFS MountingCascading Takeover with Cross Mounted NFS File Systems Creating NFS Mount Points on ClientsCaveats about Node Names and NFS NFS Cross MountsCross Mounted NFS File Systems and the Network Lock Manager SLEEP=2 Done Cluster Testing Node VerificationDevice State 131System Parameters Process StateNetwork State LVM State Cluster StateSimulate Errors Adapter FailureEthernet or Token Ring Interface Failure Switch Adapter Failure Ethernet or Token Ring Adapter or Cable FailureFailure of a 7133 Adapter Re-attach the cablesNode Failure / Reintegration AIX CrashCPU Failure Network Failure 2.3 TCP/IP Subsystem FailureDisk Failure Mirrored rootvg Disk hdisk0 Failure4.2 7135 Disk Failure Mirrored 7133 Disk FailureApplication Failure IBM Certification Study Guide AIX Hacmp Cluster Troubleshooting Cluster Log Files143 Configtoolong DaemonsDeadman Switch Tuning the System Using I/O Pacing Extending the syncd FrequencyIncrease Amount of Memory for Communications Subsystem Changing the Failure Detection Rate Node Isolation and Partitioned ClustersDgsp Message User ID Problems Troubleshooting StrategyIBM Certification Study Guide AIX Hacmp Cluster Management and Administration Monitoring the Cluster151 Clstat Command Monitoring Clusters using HAViewSystem Error Log 3.1 /var/adm/cluster.log3.2 /tmp/hacmp.out 3.3 /usr/sbin/cluster/history/cluster.mmddStarting and Stopping Hacmp on a Node or a Client Hacmp Daemons Cluster Manager daemon clstrmgrCluster Smux Peer daemon clsmuxpd Cluster Lock Manager daemon cllockdStarting Cluster Services on a Node Cluster Topology Services daemon topsvcsdCluster Group Services daemon grpsvcsd Cluster Information Program daemon clinfoStopping Cluster Services on a Node Automatically Restarting Cluster ServicesWhen to Stop Cluster services Types of Cluster StopsGraceful ForcedStarting and Stopping Cluster Services on Clients Maintaining Cluster Information Services on ClientsReplacing Failed Components NodesAdapters 3.1 SSA/SCSI Disk Replacement RAID DisksSync the volume group smit clsyncvg Manual Update Changing Shared LVM ComponentsLazy Update Spoc IBM Certification Study Guide AIX Hacmp TaskGuide Changing Cluster ResourcesTaskGuide Requirements 1 Add/Change/Remove Cluster Resources Synchronize Cluster ResourcesDare Resource Migration Utility Resource Migration Types Sticky Resource MigrationNon-Sticky Resource Migration Default Location LocationsNode Name Using the cldare Command to Migrate Resources Stop LocationUsing the clfindres Command Stopping Resource GroupsApplying Software Maintenance to an Hacmp Cluster Fallover System a Rejoins Cluster Backup Strategies Split-Mirror BackupsHow to do a split-mirror backup Using Events to Schedule a Backup User ManagementListing Users On All Cluster Nodes Adding User Accounts on all Cluster NodesChanging Attributes of Users in a Cluster Removing Users from a ClusterManaging Group Accounts Spoc LogIBM Certification Study Guide AIX Hacmp Special RS/6000 SP Topics High Availability Control Workstation HacwsHardware Requirements 183Configuring the Backup CWS Software RequirementsInstall High Availability Software Hacws ConfigurationSetup and Test Hacws Kerberos Security Ambrose Bierce, The Enlarged Devil’s Dictionary Configuring Kerberos Security with Hacmp Version VSDs RVSDs Virtual Shared Disk VSDsSpecial RS/6000 SP Topics Undefined Recoverable Virtual Shared Disk D e ZRsvd Daemons SP Switch as an Hacmp Network Switch Basics Within HacmpSwitch Failures Eprimary ManagementSpecial RS/6000 SP Topics IBM Certification Study Guide AIX Hacmp Hacmp Classic vs. HACMP/ES vs. Hanfs Hacmp for AIX ClassicHacmp for AIX / Enhanced Scalability 199IBM Risc System Cluster Technology Rsct Enhanced Cluster Security High Availability for Network File System for AIXSimilarities and Differences Decision CriteriaHacmp Classic vs. HACMP/ES vs. Hanfs IBM Certification Study Guide AIX Hacmp Appendix A. Special Notices 205SP1 Special Notices IBM Certification Study Guide AIX Hacmp Appendix B. Related Publications International Technical Support Organization PublicationsRedbooks on CD-ROMs 209Other Publications How to Get Itso Redbooks How IBM Employees Can Get Itso Redbooks211 How Customers Can Get Itso Redbooks IbmmailIBM Redbook Order Form 213IBM Certification Study Guide AIX Hacmp List of Abbreviations 215Netbios Index Symbols 217HACMP/ES 219 NISVgda Vgsa Itso Redbook Evaluation 221IBM Certification Study Guide AIX Hacmp SG24-5131-00