ATTO Technology 2500C operation manual Mapping devices iSCSI, Single Target mode, Node names

Page 24

2.4 Mapping devices: iSCSI

SCSI devices are mapped using the designations for the SCSI bus, target and LUN. CLI commands are used to modify the mapping. The easiest way to map devices is to use the Automap command, either through the CLI or the browser-based interface, ATTO ExpressNAV.

Note

For iSCSI-configured iPBridge models only.

To map devices, you must have a host computer connected to the iPBridge serial port or an Ethernet port. Refer to Getting an IP address on page 10.

The recommended management tool for the iPBridge is ATTO ExpressNAV.

By default, a host or initiator views the iPBridge as a single iSCSI node with all available SCSI devices shown as LUNs on a single iSCSI target. Refer to Exhibit 2.4-1

You may use Multiple Target mode to break the single iSCSI node into multiple nodes. Multiple Target mode allows you to grant or deny access

between initiators and devices as needed. Refer to Exhibit 2.4-1

Node names

iSCSI nodes are accessed through the Ethernet ports on an iPBridge, each identified by its own IP address.

The iPBridge uses the iqn name format, referencing the device serial number, to guarantee that the target name is world-wide unique:

iqn.1995-12.com.attotech:ipbridge: serialnumber

CAUTION

Changing the device map can affect the host’s view of devices and your application configuration.

Single Target mode

Single Target mode is the default. Use ATTO ExpressNAV interface to map devices automatically or manually. Refer to ATTO ExpressNAV interface on page 21.

Map devices automatically

1From the ExpressNAV main menu, click on the Mapping menu item on the left side of the screen.

2Click AutoMap

3Click Submit

Map devices manually

1From the ExpressNAV main menu, click on the Mapping menu item on the left side of the screen.

2Select the devices from the box on the right hand side of the

screen and drag to the appropriate LUN on the left.

3 Click Submit.

15

ATTO Technology Inc. iPBridge Installation and Operation Manual

Image 24

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