ATTO Technology 2500C operation manual Automatically configure Multiple Target mode

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Multiple Target mode

Multiple Target mode breaks the single iSCSI node of the iPBridge and replaces it with a much more configurable mapping scheme. This new mapping scheme allows you to segregate storage into different iSCSI nodes within the iPBridge, with each iSCSI target having its own set of access criteria.

For example, if you have two servers and a library with four tapes and a media changer, the default mapping would provide both servers access to all tapes and the media changer (single target mode).

If you configured Multiple Target mode, you would be able to map some devices to one server and other devices to the other server, requiring separate usernames and passwords for access.

CAUTION

If actual storage is mapped to more than one iSCSI target and a server has authorization for both targets, the server could show duplicate storage without any warning to the user.

If Multiple Target mode is enabled, the Automap, Route, RouteDisplay and CHAP CLI commands behave differently. (Refer to iSCSI commands on page 55)

To control access, different CHAP account names and CHAP secrets can be assigned to each target. (Refer to iSCSI commands on page 55)

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

Automatically configure Multiple Target mode

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

2Click on the Multi Target Mode enabled button.

3Click Submit.

4Go to the Mapping page and type [name] in the Add an iSCSI target box

The name is a suffix appended to the standard IPBridge iqn name. The suffix name can be up to 24 characters.

5Click on Submit.

6In the greyed box at the bottom of the page, click on the target name you created.

7In the next mapping page, click on AutoMap

•All the CLI commands necessary to enable mapping are performed.

•The iPBridge maps itself as a device at LUN 0.

•A target name suffix is added to the iqn of each SCSI device such as

bxtyy-vendorid-devicename

•x is the iPBridge SCSI port number

•yy is the SCSI device SCSI target ID

•vendorid is the SCSI device vendor ID

•devicename is the SCSI device’s inquiry device name.

8To save the configuration, go the Restart Firmware page and click Restart.

Manually configure Multiple Target mode

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

2Click on the Multi Target Mode enabled button.

3Click Submit.

4Go to the Mapping page and type [name] in the Add an iSCSI target box

The name is a suffix appended to the standard IPBridge iqn name. The suffix name can be up to 24 characters.

5Click on Submit.

6In the greyed box at the bottom of the page, click on the target name you created.

7After the next mapping page opens, drag the boxes representing SCSI devices to the LUNs you want. (See Exhibit 2.4-2.)

8Click Submit.

9Repeat from Step 4 for each target you want to configure.

10To save the configuration, go the Restart Firmware page and click Restart.

16 Configuration: mapping iSCSI

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Contents Atto iPBridgeTM 2500C/R/D Page Page Contents Copying iPBridge configurations Additional configurationsTroubleshooting Atto ExpressNAV interfaceDiagnostic commands Maintenance commandsAlternative interface options Serial port configuration commands Scsi configuration commandsEthernet commands ISCSI commands Ndmp commandsMapping commands Appendix a Atto iPBridge, FibreBridge familyPage IPBridge 2500 provide storage options IPBridge2500 featuresIntelligent Bridging Architecture, the engine Connectivity, infrastructure solutions Possible storage ConfigurationsAtto iPBridge 2500R/D LED indicators Installation instructionsExhibit 1.1-1 Atto iPBridge 2500R/D connector side Serial interfaceBack connector side Atto iPBridge 2500C Operating Temperature 0-70C externalHeight of tallest component .535 inches Exhibit 1.2-1 Atto iPBridge 2500C faceplate Exhibit 1.2-2 Atto iPBridge 2500C board layout Microsoft iSCSI Initiator changes Configuring the iPBridgeClick Launch Browser Getting an IP addressHow Ndmp works Ndmp configuration provides backupProcedure Setting up NdmpAssign Ndmp names to devices Map devices automatically Mapping devices NdmpMap devices manually Click AutoMapConfiguration mapping Ndmp Mapping devices iSCSI Single Target modeNode names Automatically configure Multiple Target mode Multiple Target modeManually configure Multiple Target mode Click on the Multi Target Mode enabled button Click SubmitExhibit 2.4-1 Examples of single and multiple target modes Mapping single vs. multi target modeExhibit 2.4-2 Mapping with Atto ExpressNAV Change the current user name, password Additional configurationsCreate a read only password or user name Set the Real Time ClockSnmp protocol Configuring Scsi devicesAtto ExpressNAV interface Accessing ExpressNAVBrowser compatibility To optimize ExpressNAV in Internet ExplorerExhibit 3.0-1 An ExpressNAV ExpressNAV pages Restart FirmwareHelp Using FTP over GbE Using Atto ExpressNAVUpdating firmware Preliminary stepsUsing ZModem over the serial port Copying iPBridge configurationsZModem send clone.cln Send File/ZModem sendInside out method TroubleshootingCheck the host event log Check the iPBridge event and trace logsCheck host versions Check for problems on attached devicesComponent check Checking Scsi devicesChecking the serial port Checking the iPBridge internal configurationChecking iPBridge Ethernet ports Checking the LAN/WANChecking the iSCSI OS driver Checking the iSCSI Host Adapter or NICChecking the Operating System Checking the applicationsChecking iPBridge Scsi ports Performance issuesChecking Ethernet Host Adapter or NIC Checking the host system Use the serial port or header Alternative interface optionsUse Telnet Type iPBridge in the New Connection dialog boxAtto Exhibit 7.0-1 Start up messagesCLI provides ASCII-based interface Command conventions Symbol IndicatesCommand Defaults Example CLI commands summarySntp 38 CLI General use commands VerboseMode UsernameMaintenance commands SNTPServer SpeedWriteDefaultSpeedWrite TimeDiagnostic commands DumpTraceLog DumpEventLogEventLog EventLogFilterRouteDisplay PingSCSIPortList SCSITargetsSNMPTrapAddress TemperatureSNMPTraps TailEventLogScsi configuration commands VirtualDriveResponse Performance enhancement to newly-mapped Scsi devicesSerialPortBaudRate Serial port configuration commandsSerialPortEcho 50 CLI Ethernet commands 52 CLI NDMPAuthType Ndmp commandsNDMPMaxVersion NDMPPortNumber54 CLI ISCSI commands ISNSServer ISNSLoginControlMultiTargetMode AutoMap Mapping commandsRoute List to the map which satisfies a search for the given LUN Appendix a Atto iPBridge, FibreBridge family Product features 2500C/R/D 2700C/R/D 1500E/D 1550E/DIPBridge products Fibre Bridge products Scsi cabling Appendix B CablingCable types ExamplesEthernet connections Term Definition Appendix C GlossaryVi Appendix FCC Standards Radio and Television Interference Appendix D Safety standards and compliancesEuropean Standards Appendix E Atto accessories Contact Atto Technology, Inc Appendix F Warranty, contact information
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