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IBM SG24-5131-00 manual Adapter Scsi ID and Termination change

Models: SG24-5131-00

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Figure 11. 7135-110 RAIDiant Arrays Connected on Two Shared 16-Bit SCSI Buses

3.3.2.3 Adapter SCSI ID and Termination change

The SCSI-2 Differential Controller is used to connect to 8-bit disk devices on a shared bus. The SCSI-2 Differential Fast/Wide Adapter/A or Enhanced SCSI-2 Differential Fast/Wide Adapter/A is usually used to connect to 16-bit devices but can also be used with 8-bit devices.

In a dual head-of-chain configuration of shared disks, there should be no termination anywhere on the bus except at the extremities. Therefore, you should remove the termination resistor blocks from the SCSI-2 Differential Controller and the SCSI-2 Differential Fast/Wide Adapter/A or Enhanced SCSI-2 Differential Fast/Wide Adapter/A. The positions of these blocks (U8 and U26 on the SCSI-2 Differential Controller, and RN1, RN2 and RN3 on the

Cluster Hardware and Software Preparation

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IBM SG24-5131-00 manual Adapter Scsi ID and Termination change

Contents

AIX Hacmp Page AIX Hacmp Take Note Contents Iv IBM Certification Study Guide AIX Hacmp Page Vi IBM Certification Study Guide AIX Hacmp Vii Appendix A. Special NoticesViii IBM Certification Study Guide AIX Hacmp Figures IBM Certification Study Guide AIX Hacmp Tables Xii IBM Certification Study Guide AIX Hacmp Xiii PrefaceTeam That Wrote This Redbook Your comments are important to us Comments WelcomeXvi IBM Certification Study Guide AIX Hacmp Recommended Prerequisites Certification OverviewIBM Certified Specialist AIX Hacmp Certification Requirement two TestsHacmp Implementation PreinstallationCertification Exam Objectives System Management Certification Education Courses Following table outlines information about the next course IBM Certification Study Guide AIX Hacmp CPU Options Cluster PlanningCluster Nodes Cluster Node Considerations Cluster Planning Switch adapter is onboard and does not need an extra slot Supported TCP/IP Network Types Cluster Networks1 TCP/IP Networks Special Network Considerations Slip SoccCluster Planning Supported Non-TCP/IP Network Types Non-TCPIP NetworksSerial RS232 Special ConsiderationsTarget-mode SSA Cluster DisksSSA Disks Target-mode ScsiHost Specification 1.2 Supported and Non-Supported Adapters Disk CapacitiesRules for SSA Loops Cluster Planning RAID Level RAID vs. Non-RAID RAID TechnologyRAID Levels 2 RAID on the 7133 Disk Subsystem Advantages Subsystems Scsi DisksDisks Advantages Disadvantages Resource Group Options Resource PlanningCluster Planning Shared LVM Components Hot-Standby ConfigurationHot-Standby Configuration Rotating Standby ConfigurationMutual Takeover Configuration Mutual Takeover ConfigurationThird-Party Takeover Configuration Third-Party Takeover ConfigurationIP Address Takeover Concurrent Disk Access ConfigurationsSingle Network Network TopologyPoint-to-Point Connection Dual NetworkNetwork Attribute NetworksNetwork Name Adapter Function Network AdaptersAdapter Label Cluster Planning Defining Hardware Addresses Application Planning NFS Exports and NFS MountsApplication Startup and Shutdown Routines Performance RequirementsCritical/Non-Critical Prioritizations Licensing MethodsCoexistence with other Applications Event Notification Customization PlanningEvent Customization Special Application RequirementsPredictive Event Error Correction Error NotificationSample Screen for Add a Notification Method Application Failure NotificationCluster User and Group IDs User ID PlanningNFS-Mounted Home Directories Cluster PasswordsHome Directories on Shared Volumes User Home Directory PlanningNFS-Mounted Home Directories on Shared Volumes Rootvg Mirroring Cluster Node SetupAdapter Slot Placement Cluster Hardware and Software PreparationIBM Certification Study Guide AIX Hacmp Procedure This is so that the Quorum OFF functionality takes effect Necessary Apar Fixes AIX Prerequisite LPPs4.1 I/O Pacing AIX Parameter SettingsChecking Network Option Settings Cron and NIS Considerations Editing the /.rhosts File Cabling Considerations Network Connection and TestingIP Addresses and Subnets Connecting Networks to a HubTesting Non TCP/IP Networks Configuring Target Mode Scsi Configuring RS232Testing RS232 and Target Mode Networks Configuring Target Mode SSACabling Cluster Disk Setup1 SSA Adapter Router AIX ConfigurationDisk Definitions Adapter Definitions#lsdev -Cc disk grep SSA DiagnosticsMicrocode Loading Upgrade InstructionsCluster Hardware and Software Preparation Scsi Configuring a RAID on SSA DisksRAID Enclosures Connecting RAID SubsystemsScsi Adapters 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 Change/Show Characteristics of a Scsi Adapter Shared LVM Component ConfigurationCreating Non-Concurrent VGs Creating VGs for Concurrent AccessCreating Shared VGs Physical Volume Names Creating Shared LVs and File Systems Renaming a jfslog and Logical Volumes on the Source NodeAdding Copies to Logical Volume on the Source Node Importing to Other Nodes Testing a File SystemMirroring Strategies Changing a Volume Group’s Startup Status Quorum at Vary On QuorumDisabling and Enabling Quorum Quorum EnabledQuorum Disabled Quorum after Vary OnForcing a Varyon Quorum in Non-Concurrent Access ConfigurationsQuorum in Concurrent Access Configurations Alternate Method TaskGuideStarting the TaskGuide IBM Certification Study Guide AIX Hacmp First Time Installs Hacmp Installation and Cluster DefinitionInstalling Hacmp Cluster.base.server.utils Cluster.hc Upgrading From a Previous Version Install Server NodesRebooting Servers Upgrade AIX on One Node Check Upgraded Configuration Install Hacmp 4.3 for AIX on Node aClient-only Migration Defining Cluster Topology Defining Nodes Defining the ClusterDefining Adapters Hacmp Installation and Cluster Definition Node Name Adding or Changing Adapters after the Initial Configuration Configuring Network ModulesSynchronizing the Cluster Definition Across Nodes Ignore Cluster Defining Resources Configuring Resource GroupsService IP Label Configuring Resources for Resource GroupsDefining Application Servers Configuring Run-Time ParametersSynchronizing Cluster Resources Initial TestingClverify Takeover and Reintegration Initial StartupCluster Snapshot Applying a Cluster Snapshot Hacmp Installation and Cluster Definition IBM Certification Study Guide AIX Hacmp Predefined Cluster Events Cluster CustomizationNodeupremote AcquireserviceaddrAcquiretakeoveraddr GetdiskvgfsNodedownremote ReleaseserviceaddrSequence of nodedown Events NodedownlocalNetworkupcomplete StartserverNetwork Events Networkdown NetworkupSwapadapter ConfigtoolongReconfigtopologystart Network Adapter EventsEvent Notification Event Recovery and RetryConfiguration Resources Cluster Events Change/Show Cluster Pre- and Post-Event ProcessingEvent Emulator Network Modules/Topology Services and Group Services NFS considerations Creating Shared Volume GroupsCreating NFS Mount Points on Clients Exporting NFS File SystemsNFS Mounting Cascading Takeover with Cross Mounted NFS File SystemsNFS Cross Mounts Caveats about Node Names and NFSCross Mounted NFS File Systems and the Network Lock Manager SLEEP=2 Done 131 Cluster TestingNode Verification Device StateNetwork State System ParametersProcess State Cluster State LVM StateEthernet or Token Ring Interface Failure Simulate ErrorsAdapter Failure Ethernet or Token Ring Adapter or Cable Failure Switch Adapter FailureRe-attach the cables Failure of a 7133 AdapterCPU Failure Node Failure / ReintegrationAIX Crash 2.3 TCP/IP Subsystem Failure Network FailureMirrored rootvg Disk hdisk0 Failure Disk FailureMirrored 7133 Disk Failure 4.2 7135 Disk FailureApplication Failure IBM Certification Study Guide AIX Hacmp 143 Cluster TroubleshootingCluster Log Files Daemons ConfigtoolongDeadman Switch Increase Amount of Memory for Communications Subsystem Tuning the System Using I/O PacingExtending the syncd Frequency Node Isolation and Partitioned Clusters Changing the Failure Detection RateDgsp Message Troubleshooting Strategy User ID ProblemsIBM Certification Study Guide AIX Hacmp 151 Cluster Management and AdministrationMonitoring the Cluster Monitoring Clusters using HAView Clstat Command3.3 /usr/sbin/cluster/history/cluster.mmdd System Error Log3.1 /var/adm/cluster.log 3.2 /tmp/hacmp.outStarting and Stopping Hacmp on a Node or a Client Cluster Lock Manager daemon cllockd Hacmp DaemonsCluster Manager daemon clstrmgr Cluster Smux Peer daemon clsmuxpdCluster Information Program daemon clinfo Starting Cluster Services on a NodeCluster Topology Services daemon topsvcsd Cluster Group Services daemon grpsvcsdAutomatically Restarting Cluster Services Stopping Cluster Services on a NodeForced When to Stop Cluster servicesTypes of Cluster Stops GracefulMaintaining Cluster Information Services on Clients Starting and Stopping Cluster Services on ClientsAdapters Replacing Failed ComponentsNodes Disks 3.1 SSA/SCSI Disk Replacement RAIDSync the volume group smit clsyncvg Changing Shared LVM Components Manual UpdateLazy Update Spoc IBM Certification Study Guide AIX Hacmp TaskGuide Requirements TaskGuideChanging Cluster Resources Synchronize Cluster Resources 1 Add/Change/Remove Cluster ResourcesDare Resource Migration Utility Non-Sticky Resource Migration Resource Migration TypesSticky Resource Migration Node Name Default LocationLocations Stop Location Using the cldare Command to Migrate ResourcesStopping Resource Groups Using the clfindres CommandApplying Software Maintenance to an Hacmp Cluster Fallover System a Rejoins Cluster Split-Mirror Backups Backup StrategiesHow to do a split-mirror backup User Management Using Events to Schedule a BackupAdding User Accounts on all Cluster Nodes Listing Users On All Cluster NodesRemoving Users from a Cluster Changing Attributes of Users in a ClusterSpoc Log Managing Group AccountsIBM Certification Study Guide AIX Hacmp 183 Special RS/6000 SP TopicsHigh Availability Control Workstation Hacws Hardware RequirementsSoftware Requirements Configuring the Backup CWSHacws Configuration Install High Availability SoftwareSetup and Test Hacws Kerberos Security Ambrose Bierce, The Enlarged Devil’s Dictionary Configuring Kerberos Security with Hacmp Version Virtual Shared Disk VSDs VSDs RVSDsSpecial RS/6000 SP Topics Undefined D e Z Recoverable Virtual Shared DiskRsvd Daemons Switch Basics Within Hacmp SP Switch as an Hacmp NetworkEprimary Management Switch FailuresSpecial RS/6000 SP Topics IBM Certification Study Guide AIX Hacmp 199 Hacmp Classic vs. HACMP/ES vs. HanfsHacmp for AIX Classic Hacmp for AIX / Enhanced ScalabilityIBM Risc System Cluster Technology Rsct High Availability for Network File System for AIX Enhanced Cluster SecurityDecision Criteria Similarities and DifferencesHacmp Classic vs. HACMP/ES vs. Hanfs IBM Certification Study Guide AIX Hacmp 205 Appendix A. Special NoticesSP1 Special Notices IBM Certification Study Guide AIX Hacmp 209 Appendix B. Related PublicationsInternational Technical Support Organization Publications Redbooks on CD-ROMsOther Publications 211 How to Get Itso RedbooksHow IBM Employees Can Get Itso Redbooks Ibmmail How Customers Can Get Itso Redbooks213 IBM Redbook Order FormIBM Certification Study Guide AIX Hacmp 215 List of AbbreviationsNetbios 217 Index SymbolsHACMP/ES NIS 219Vgda Vgsa 221 Itso Redbook EvaluationIBM Certification Study Guide AIX Hacmp SG24-5131-00