Exhibit 2.4-2 Mapping with Atto ExpressNAV | ATTO Technology 2500C

Exhibit 2.4-2 Mapping with ATTO ExpressNAV

18 Configuration: mapping iSCSI

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ATTO Technology 2500C operation manual Exhibit 2.4-2 Mapping with Atto ExpressNAV

Contents

Atto iPBridgeTM 2500C/R/D Page Page Contents Atto ExpressNAV interface Additional configurationsCopying iPBridge configurations Troubleshooting Maintenance commands Diagnostic commandsAlternative interface options Scsi configuration commands Serial port configuration commandsEthernet commands Appendix a Atto iPBridge, FibreBridge family Ndmp commandsISCSI commands Mapping commandsPage IPBridge2500 features IPBridge 2500 provide storage optionsIntelligent Bridging Architecture, the engine Connectivity, infrastructure solutions Possible storage Configurations Atto iPBridge 2500R/D Serial interface Installation instructionsLED indicators Exhibit 1.1-1 Atto iPBridge 2500R/D connector side Back 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 Microsoft iSCSI Initiator changes Configuring the iPBridge Click Launch Browser Getting an IP address How Ndmp works Ndmp configuration provides backup Setting up Ndmp ProcedureAssign Ndmp names to devices Click AutoMap Mapping devices NdmpMap devices automatically Map devices manually Configuration mapping Ndmp Single Target mode Mapping devices iSCSINode names Click on the Multi Target Mode enabled button Click Submit Multiple Target modeAutomatically configure Multiple Target mode Manually configure Multiple Target mode Exhibit 2.4-1 Examples of single and multiple target modes Mapping single vs. multi target mode Exhibit 2.4-2 Mapping with Atto ExpressNAV Set the Real Time Clock Additional configurationsChange the current user name, password Create a read only password or user name Snmp protocol Configuring Scsi devices To optimize ExpressNAV in Internet Explorer Accessing ExpressNAVAtto ExpressNAV interface Browser compatibility Exhibit 3.0-1 An ExpressNAV ExpressNAV pages Firmware RestartHelp Preliminary steps Using Atto ExpressNAVUsing FTP over GbE Updating firmware Send File/ZModem send Copying iPBridge configurationsUsing ZModem over the serial port ZModem send clone.cln Check the iPBridge event and trace logs TroubleshootingInside out method Check the host event log Checking Scsi devices Check for problems on attached devicesCheck host versions Component check Checking the LAN/WAN Checking the iPBridge internal configurationChecking the serial port Checking iPBridge Ethernet ports Checking the applications Checking the iSCSI Host Adapter or NICChecking the iSCSI OS driver Checking the Operating System Performance issues Checking iPBridge Scsi portsChecking Ethernet Host Adapter or NIC Checking the host system Type iPBridge in the New Connection dialog box Alternative interface optionsUse the serial port or header Use Telnet Atto Exhibit 7.0-1 Start up messages CLI provides ASCII-based interface Command conventions Symbol Indicates Command Defaults Example CLI commands summary Sntp 38 CLI General use commands VerboseMode Username Maintenance commands Time SpeedWriteDefaultSNTPServer SpeedWrite Diagnostic commands EventLogFilter DumpEventLogDumpTraceLog EventLog SCSITargets PingRouteDisplay SCSIPortList TailEventLog TemperatureSNMPTrapAddress SNMPTraps Scsi configuration commands VirtualDriveResponse Performance enhancement to newly-mapped Scsi devices Serial port configuration commands SerialPortBaudRateSerialPortEcho 50 CLI Ethernet commands 52 CLI NDMPPortNumber Ndmp commandsNDMPAuthType NDMPMaxVersion 54 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 Examples Appendix B CablingScsi cabling Cable types Ethernet connections Term Definition Appendix C Glossary Vi Appendix FCC Standards Radio and Television Interference Appendix D Safety standards and compliances European Standards Appendix E Atto accessories Contact Atto Technology, Inc Appendix F Warranty, contact information