ATTO Technology 2500C Troubleshooting, Inside out method, Check the host event log

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6 Troubleshooting

If it is clear that a particular component system is at fault in a problem situation, go directly to that component. If it is not clear, the best approach is to troubleshoot using the inside-out method.

You may check on the status of your iPBridge using the ExpressNAV interface. Refer to ExpressNAV pages on page 23 to see which pages may contain the information you need. You may also look for information by using the diagnostic CLI commands, enumerated in Diagnostic commands on page 43, in the Advanced page of the ExpressNAV interface, or by

using the CLI directly (refer to CLI provides ASCII- based interface on page 35.)

To start and use the ExpressNAV interface, including how to access the version information, refer to ATTO ExpressNAV interface on page 21.

Inside out method

To troubleshoot using the inside out method, begin with the device(s) connected to the iPBridge first, then work your way out.

•SCSI devices

•iPBridge SCSI ports

•iPBridge internal configuration

•iPBridge Ethernet/IP ports

•LAN/WAN

•Ethernet host adapter or NIC in host

•iSCSI OS driver

•OS

•Application

Check the host event log

Check the event log on the host. Look for the most recent entries and determine what could be causing a

problem, then go to that event and continue troubleshooting.

Check the iPBridge event and trace logs

Check the iPBridge event log through the CLI. Refer to Diagnostic commands on page 43. Look for the most recent entries and determine what could be

causing a problem. Then go to that event and continue troubleshooting.

Visually inspect LEDs

Light Emitting Diodes (LEDs) are located on both sides of the iPBridge

If there is a non-fatal power supply problem, or if a problem is detected before shut down occurs, the Fault LED flashes. The Fault LED also flashes briefly during start up.

Each SCSI bus has its own LED to show activity on that bus. The LED blinks when I/O is occurring and is solid when there is heavy activity.

The Fault LED lights yellow when the iPBridge is turned on, then immediately goes dark. Software activates the LED if there is a system error.

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ATTO Technology Inc. iPBridge Installation and Operation Manual

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Contents Atto iPBridgeTM 2500C/R/D Page Page Contents Additional configurations Copying iPBridge configurationsTroubleshooting Atto ExpressNAV interfaceMaintenance commands Diagnostic commandsAlternative interface options Scsi configuration commands Serial port configuration commandsEthernet commands Ndmp commands ISCSI commandsMapping commands Appendix a Atto iPBridge, FibreBridge familyPage IPBridge2500 features IPBridge 2500 provide storage optionsIntelligent Bridging Architecture, the engine Possible storage Configurations Connectivity, infrastructure solutionsAtto iPBridge 2500R/D Installation instructions LED indicatorsExhibit 1.1-1 Atto iPBridge 2500R/D connector side Serial interfaceBack connector side Operating Temperature 0-70C external Atto iPBridge 2500CHeight of tallest component .535 inches Exhibit 1.2-1 Atto iPBridge 2500C faceplate Exhibit 1.2-2 Atto iPBridge 2500C board layout Configuring the iPBridge Microsoft iSCSI Initiator changesGetting an IP address Click Launch BrowserNdmp configuration provides backup How Ndmp worksSetting up Ndmp ProcedureAssign Ndmp names to devices Mapping devices Ndmp Map devices automaticallyMap devices manually Click AutoMapConfiguration mapping Ndmp Single Target mode Mapping devices iSCSINode names Multiple Target mode Automatically configure Multiple Target modeManually configure Multiple Target mode Click on the Multi Target Mode enabled button Click SubmitMapping single vs. multi target mode Exhibit 2.4-1 Examples of single and multiple target modesExhibit 2.4-2 Mapping with Atto ExpressNAV Additional configurations Change the current user name, passwordCreate a read only password or user name Set the Real Time ClockConfiguring Scsi devices Snmp protocolAccessing ExpressNAV Atto ExpressNAV interfaceBrowser compatibility To optimize ExpressNAV in Internet ExplorerExhibit 3.0-1 An ExpressNAV ExpressNAV pages Firmware RestartHelp Using Atto ExpressNAV Using FTP over GbEUpdating firmware Preliminary stepsCopying iPBridge configurations Using ZModem over the serial portZModem send clone.cln Send File/ZModem sendTroubleshooting Inside out methodCheck the host event log Check the iPBridge event and trace logsCheck for problems on attached devices Check host versionsComponent check Checking Scsi devicesChecking the iPBridge internal configuration Checking the serial portChecking iPBridge Ethernet ports Checking the LAN/WANChecking the iSCSI Host Adapter or NIC Checking the iSCSI OS driverChecking the Operating System Checking the applicationsPerformance issues Checking iPBridge Scsi portsChecking Ethernet Host Adapter or NIC Checking the host system Alternative interface options Use the serial port or headerUse Telnet Type iPBridge in the New Connection dialog boxExhibit 7.0-1 Start up messages AttoCommand conventions Symbol Indicates CLI provides ASCII-based interfaceCLI commands summary Command Defaults ExampleSntp 38 CLI General use commands Username VerboseModeMaintenance commands SpeedWriteDefault SNTPServerSpeedWrite TimeDiagnostic commands DumpEventLog DumpTraceLogEventLog EventLogFilterPing RouteDisplaySCSIPortList SCSITargetsTemperature SNMPTrapAddressSNMPTraps TailEventLogScsi configuration commands Performance enhancement to newly-mapped Scsi devices VirtualDriveResponseSerial port configuration commands SerialPortBaudRateSerialPortEcho 50 CLI Ethernet commands 52 CLI Ndmp commands NDMPAuthTypeNDMPMaxVersion NDMPPortNumber54 CLI ISCSI commands ISNSLoginControl ISNSServerMultiTargetMode Mapping commands AutoMapRoute List to the map which satisfies a search for the given LUN Product features 2500C/R/D 2700C/R/D 1500E/D 1550E/D Appendix a Atto iPBridge, FibreBridge familyIPBridge products Fibre Bridge products Appendix B Cabling Scsi cablingCable types ExamplesEthernet connections Appendix C Glossary Term DefinitionVi Appendix Appendix D Safety standards and compliances FCC Standards Radio and Television InterferenceEuropean Standards Appendix E Atto accessories Appendix F Warranty, contact information Contact Atto Technology, Inc