Check Scsi Bus Termination | ADIC SNC 5100, Scalar 1000 instruction

SNC 5100

Check SCSI Bus Termination

Caution

If in this procedure you determine that you need to remove a SCSI cable or terminator, all I/O to the SNC 5100 must be stopped and the SNC 5100 must be turned off.

Step 1. Verify the termination for the end device attached to the channel in question.

The last physical device on a chain of SCSI devices needs to be terminated.

If the end device has internal termination, be sure it is enabled.

Otherwise check that an external terminator is attached to the device.

A Differential (DE) terminator on a Single Ended (SE) bus or an SE terminator on a DE bus will cause the bus to be unusable.

Step 2. Verify the termination for the other devices attached to the channel in question.

Check that all SCSI devices other than the end devices have internal termination disabled.

A Differential (DE) terminator on a Single Ended (SE) bus or an SE terminator on a DE bus will cause the bus to be unusable.

Step 3. If there are SCSI termination problems, power down the SNC 5100 down and correct them.

If you corrected SCSI termination problems, go to "SCSI Health Check".

If SCSI termination is OK, go to "Check for Multiple SCSI IDs".

Step 4. If you powered down the SNC 5100 down, turn it back on.

SCSI Channel MAP

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ADIC SNC 5100, Scalar 1000 manual Check Scsi Bus Termination

Contents

User Guide Copyright Notice Europe Copyright Notice Introduction Install the SNC Maintenance Action Plans Removal and Replacement Procedures Service Port Command Reference Connecting to the Service PortDiagnostic Command Reference Warranty and Eula Post Error CodesStartup Message Reference Glossary Safety Inspection Safety NoticesWelcome Safety Label Check Remove AC PowerSafety Label External Machine Check Laser Safety Fusing RequirementsLithium Battery Environmental Notices and Statements Usage Restrictions General RestrictionsRegulatory Notices Electronic Emission Statements European Community Compliance Statement Industry Canada Compliance Statement SNC CE Notice Documentation Overview Configuration Overview Address Mapping Configuration SupportInterface Protocol Awareness Fibre Channel Interfaces Hardware Product Description and FeaturesFibre Channel Connections Gbic speed Cable Type Distance Ultra2 Scsi I/O Interfaces Service Port Scsi Command SupportEthernet LEDs LED Indicators Scsi Supported Platforms Supported Devices Operating SpecificationsOperating Environment Power Requirements Power Consumption SNC Operating Specifications 00020-02 Pre-Installation Checklist Pre-installation ProcedureStep Actions Comments and References Installation Checklist Installation Procedure Installation Checklist See the setHost port,OS Host Utility Software Host Utility Software Other Installation Issues Post-InstallationAttaching Scsi Devices Maximum Number of LUNs Wide and Narrow Scsi Buses Transfer Rates Ultra, Fast, and Asynchronous Scsi Trade Association Terminology Table of Scsi Terminology and LimitationsMax Bus Endorsed Terminology Max. Bus Speed Lengths MB/Sec Devices Scsi Bus Termination Problems on the Scsi Bus Missing terminator at the end of a Scsi bus Bent pins in a Scsi connectorExcessive termination Multiple devices at the same ID Fuses Host Bus Adapter SetupInadequate cables Mixed cable types Installing the Host Registration Service Installing the SAN ExplorerPower-Up and Boot Sequence Guidelines SNC SNC Other Installation Issues 00020-02 Component Subsystem Go To Maintenance Action Plans Troubleshooting Table Check Event Log Event Codes and ActionsReview all visual observations and Event Codes against on Event Codes and Actions Event Viewing Default Action2Description Code Level1 Threshold Code Level Threshold Event Viewing Default Action LIP Description Code Level1 Threshold Event Codes and Actions Health Check Event Descriptions Heartbeat Event Descriptions Action Reference Table Action Reference TableAction Number Start MAP Event Code or Obvious SymptomEvent Viewing Levels Event Viewing Levels Visually Inspect LEDs Check SNC 5100 Product Versions Check for Problems on Attached DevicesCheck Host Versions Adic Management Console version Hardware version Firmware version Quick Component Check Stop all I/O Remove the Ethernet cable if installedPerform Health Check Check the Host Event Log Database Full MAP Device Access MAP Check Scsi Channel Devices Check Fibre Channel Port Status Scsi Channel MAP Check Channel Zoning SettingsGet Scsi Information for the SNC Check Attached Scsi Devices from the Service Port Compare Listed versus Supported Devices Compare Listed versus Physical Devices Check Scsi Bus Termination Type Check for Multiple Scsi IDs Improper Device Type Examine Scsi Cables Scsi Health Check Examine Scsi Connectors Scsi Loop Back Test Isolating Scsi devices Testing Scsi Cables Restore Scsi Setup Verify Fibre Channel Connections Fibre Channel MAP Test Gbic Fibre Channel Loop Back Test Examine Cables Testing Fibre Channel Optical Cable Replace Fibre Channel Device Replace Fibre Channel Cable MAP for the SNC Temperature MAPObserve Operational LED Behavior Temperature Warnings or Alarms Received Notification of Problems in Temperature Subsystem Fan Speed is in Warning or Alarm Range Power MAP Ethernet Port on Faceplate Ethernet MAP SNC Example SN60023 ifShow SNC Display of failed Ping test From the service port, enter the elTest command From the service terminal, enter the diagBoot commandStep Verify that the diagmode prompt is displayed If both addresses are the same, go to step Service Port MAP Check the RS-232 Cable Check Connection with Boot Messages Check Scalar Firewall Manager Access Settings Virtual Private SAN Scalar Firewall Manager Settings MAPPerform these steps if SFM devices are unavailable Verify Host Access to Devices SNC Page Handling Electrostatic Discharge-Sensitive Parts Removal and Replacement Procedures Before Removing or Replacing the Unit Removing and Replacing the GbicRemoving the Gbic Replacing the Gbic Removing the SNC Removing and Replacing the Unit Replacing the SNC Final Diagnostic TestsFinal Test Preparation Test Fibre Channel Port Fibre Channel Tests Test Scsi Port 1 Ethernet TestTest Scsi Port 3 For more information, see Network Setup for the SNC Network Setup for the SNC Enter the hostNameSet command to set the Host name , Pre-Installation Checklist, onFor more information, see the hostNameSet command on Ethernet Port Foster ethAddrSet 10.0.0.2 Updating the SNC Checklist Post-Repair Checklist Post-Repair Checklist Start the Adic FcShowDevs SNC Post-Repair Checklist 00020-02 DB-9 RS-232 Connector Pin Assignments Service Port Connections Hardware Required Connecting the Service TerminalLists the null modem cable connections Null Modem Cable Connections Verifying the Connection Initial Setup of HyperTerminal Updating SNC 5100 Firmware Updating Firmware and Configurations Loading a Configuration File Saving a Configuration File Zmodem Status Codes Zmodem Status Code TableStatus Description Code Setting the Real Time Clock Setting the Time and Date Adding a Host System Running Timeserver For more information, see the tzSet timezone command on Disabling the Timeserver Host For more information, see the setTimeHost command on Synchronizing the Real Time Clock with a Timeserver For more information, see the rtcSetCurrent command on Commands Listed Alphabetically byFunction CommandsCommand or Command Description Group Command and Control Managing the SNC Diagnostics Command or Command Description GroupEnvironmental Sensors Ethernet Network Event Logging Fibre Channel Health Check Flash File SystemHelp Product Data Scalar Firewall Manager Scsi Startup ClearReservationdevId ArptabShowParameter Value CleShow LUN CleHelpCleShowAll CsClearLogFile DiagHelp command displays a list of the diagnostic commands DiagBootDateSetFromRTC DiagHelp Option DisableCC option number EnvMonShow EnableCCChannel Name Description EnvMonRangeShow EthAddrGet FcConnTypeGet port EthAddrSetParameter Value Meaning FcFibreSpeedGet port FcConnTypeSet port,connection FcGbicShow port FcFibreSpeedSet port,speed Finisar Corp GBIC. Specifying the port number is optional FcPortModeGet port Value Port Mode FcRestart port FcPortModeSet port,mode Level Meaning FcShow level Ctlr Id Ext. Fifo FcShowDevs FcTxEnable port FcTxDisable portFcShowNames GateAddrSet GateAddrGet Terminal Help command displays a list of the shell commandsHelp Commands 133 00020-02 HlthChkIntervalGet HlthChkHelpHlthChkIntervalSet HlthChkLevelSet HlthChkLevelGetHlthChkNow Host add,hostname,ipAddress Where Following is an example of host file contentsHost delete,hostname Host list HostShow HostNameSetHostTypeShow IcmpstatShow IfShow InitializeBox InetstatShow LicenseShow IpstatShowLoggerDump number SN600393 File are displayed starting with the most recent eventsLoggerDumpCurrent level MacShow Ls or ll MapCompressDatabase Ethernet interface MapRebuildDatabase MapHelp MapShowDatabase SNA MapShowDevs MapWinnowDatabaseLun dev ID MapWinnowDatabaseMbufShow NetHelp Administrator Rdate timeserver NormalBoot Reset RebootReserveShow level ReserveShow Viewing Levels Ridtag value RestartScsi channelOn original equipment, the RID tag will be blank Route add,destination,gateway Route Route delete,destination,gateway Route list command lists the existing routesRoute list RtcSetCurrent String ScsiAltIdSet channel,id ScsiAltIdGet channel ScsiHostChanSet channel,mode ScsiHostChanGet channel ScsiHostIdSet channel,id ScsiHostIdGet channelScsiRescan channel ScsiResetDisableSet channel,mode ScsiResetDisableGet channel LUN ScsiShow ScsiTermSet channel,termination ScsiTermGet channelSetFcFrameSize channel,size SetHost port,OS SetFcHardId channel,id Value Meaning SetNettime value SetSnaCCLun newLUN SfmAccessApplySetTimeHost SfmAccessSet hostindex,Starting LUN,Ending LUN,Access SfmAccessClear disable codeAccess Value SfmActiveSet Following command example shows SFM information for host Id SfmFeatureEnable license key stringIf SFM is already active, the following is displayed SfmConnectionSet hostindex,host connection string If SFM is already inactive, the following is displayed SfmInactiveSetSfmNameSet hostindex,name string Hostindex Meaning SfmShow hostIndex SfmTypeSet hostIndex,OS type string SfmSparseAccessSethostindex,LUN string,AccessShellLock ShowVersions ShowBox SnmpCommunitiesShow SncFeatureEnable licensekeystring SnmpHelp SnmpHelp command displays a list of the snmp commands SnmpReadCommunityRemove string SnmpReadCommunityAdd string ,viewSnmpTrapCommunitySet string,view SnmpWriteCommunityAdd string,view SysNodeNameModeSet Mode SysConfigShowSnmpWriteCommunityRemove string SysNodeNameModeShow Mode DefinitionSysVpdShow or sysVpdShowAll OEM Adic IBM Data for the Fibre Channel Gbic Gbic NV RAM CPU Targets Sz filename TcpstatShow TrapDestRemove ipAddress TrapDestAdd ipAddress TzSet timezone TrapDestShowUdpstatShow UserDelete username,password UserAdd username,passwordUptime User UserList UserHelp command displays a list of the user commandsUserHelp Version SNC Entering Diagnostic Mode Boot Modes Restoring Normal Mode Special ProceduresHealth Check Manual Health Check Event Log Dump Retrieving the Code 43 Dump File SNC Diagnostic Commands Boot Mode Commands FcSlotTest ElTest Unsuccessful Fibre Test ScsiChannelTest x,y Unsuccessful Scsi Test cable not plugged SupportDump ShowBox also lists the cabling requirements for each slot EnvMonShow dmva reserveShow ROM Init Post Boot Behavior Initial Post Simple Access Test Memory Size Bitwalk TestPattern Test Secondary Post Identify and Execute bootromAddress Test Start of Bootrom Post Service Menu Cold Boot from primary bootrom Cold boot from Alternate bootromButton may be depressed any time during the memory tests After completing the memory tests Post will display Receive new boot image from serial port Error DisplaysFull Version information SNC Post Service Menu 00020-02 See the sample code below Bootrom Messages LIC Initialization Messages Final Startup Messages SNC Bootrom Messages 00020-02 Maintenance Action Plan Dynamic Random Access MemoryBasic Input/Output System Differential Ended Replacement Identification Power-On Self testSynchronous Dynamic Random Access Memory SAN Replication Services Adic Limited Product Warranty Warranty and Eula Adic Limited Product Warranty 00020-02 Adic End User License Agreement Adic End User License Agreement 00020-02 Adic End User License Agreement 215 00020-02 SNC Index Bootrom 110, 171 Post MAP SNC 220 00020-02