Q-Logic 8200 SERIES manual Maximum Frame Size, Configuration Restriction on RAID Devices

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4 – Using the SANbox SSP Configuring Storage

4.4.3

Maximum Frame Size

The default maximum frame size for the SANbox SSP is 1024 bytes. The maximum frame size must be set to the smallest maximum frame size of any device on the SAN.

If no device on the SAN is less than 2048 bytes, set the maximum frame size to 2048 bytes for a potential performance advantage. See "Modify Ports Command" on page B-15for more information about setting the maximum frame size.

NOTE: The maximum frame size for most SANs can be set to 2048.

4.4.4

Configuration Restriction on RAID Devices

CAUTION! Failure to comply with this restriction can cause the SVM to be unable to see or access the available storage, or, in the most extreme cases, data corruption.

This StoreAge-specific restriction affects RAID devices that are used as back-side storage.

Some RAID devices allow the administrator to expose multiple logical units on multiple ports of the RAID device using the same logical unit number (LUN). This means that a logical unit can be exposed on controller A port 1 as LUN 3, for example, while simultaneously a different logical unit can be exposed on controller B port 2, also as LUN 3.

While this is a legal configuration for the RAID devices in question, the device manager in the SVM GUI (Storage Virtualization Manager Graphical User Interface) interprets those two distinct LUNs as a single piece of physical storage, with two available paths.

When accessing storage through SVM GUI, it is important that the administrator not assign the same LUN ID to different logical units on the same RAID device, even if those logical units are visible on different ports. Each logical unit on a given RAID device must have a unique LUN ID.

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Contents SANbox 8200 Series Storage Services Platform Page Table of Contents Section SANbox SSP Management GUI Reference Using the SANbox SSPSection Troubleshooting Figures Tables Page Introduction Related Documentation AudienceReadme File New in this Release Style Conventions Regulatory and Safety NoticesProduct Declaration of ConformityManufacturer Introduction Regulatory and Safety Notices Before Contacting Technical Support Warranty and Technical SupportContact Information AvailabilityTraining Introduction Warranty and Technical Support SN0054628-00 a General Description SANbox SSP and StoreAge Solution OverviewSANbox SSP/StoreAge Solution SANbox SSP Overview FeaturesSmall SAN Deployment Configuration with Zoning Supported Network ConfigurationsDual Fabric Configuration Small SAN Configuration with Front/Back-Side SANsHigh-Availability Configuration High-Availability Fabric Configuration Setup Requirements How the Solution Protects Against FailuresConsole Port Connection Port Connections Fibre Channel Port ConnectionsEthernet Connections General Description Port Connections SN0054628-00 a Task Roadmap Roadmap of Setup TasksChecking Package Contents SANbox 8200/8202 SSP Port Side Setting Up SANbox SSPSANbox 8200/8202 SSP Fan Side Setting Up SANbox SSP HardwareTo mount SANbox SSP in a rack To install the power suppliesTo connect the console port Inserting the Right Power SupplyTo access the CLI through the serial console port Accessing SANbox SSP for the First TimeTo power up SANbox SSP To configure the terminal settings on the host computerGateway Netmask To modify Ethernet settings for remote accessConnecting StoreAge SVM Appliances to the SAN Connecting to the SANTo connect SANbox SSPs to the SAN Connecting SANbox SSPs to the SANTo connect hosts to the SAN Connecting Hosts to the SANManaging your Configuration Page Managing SANbox SSP SANbox SSP Management GUI ReferenceTo install Java WebStart Using the SANbox SSP Management GUIQLogic SANbox Storage Services Platform SSP Screen To log into the SANbox SSP Management GUI SANbox SSP Management GUI Application Installation ScreenTo access the CLI using ssh Using the Command Line Interface RemotelyUsing the Command Line Interface Locally To access the CLI using telnetSANbox SSP Management GUI Functions Navigating the SANbox SSP Management GUITo manage external port behavior SystemEnabling and Disabling Ports System Ethernet Panel Ethernet Panel SystemSystem Sensors Panel Sensors Panel SystemTo use the Diagnostics panel DiagnosticsTelnet Screen Initiated from the SANbox SSP Management GUI TelnetLog 10. Diagnostic Screen Log PanelPage Setting up a High-Availability Configuration Using the SANbox SSPComponent SAN Zoning High-Availability Fabric Configuration with Zoning Yellow zone Pink zone Directly Connecting Devices to SANbox SSPZoning Configuring StorageAccess Maximum Frame Size Configuration Restriction on RAID DevicesTo create storage pools Using the SVM GUI to Manage Virtual StorageGuidelines for Selecting the Storage Device Profile To create virtual volumesClick Fail Back Failing BackTo shut down SANbox SSP from the CLI To shut down SANbox SSP using the Main Power SwitchShutting Down SANbox SSP To restart SANbox SSP from the CLIUsing the SANbox SSP Shutting Down SANbox SSP SN0054628-00 a SANbox SSP System Software Maintaining the SANbox SSPTo select the active boot set from the local console Boot SetsTo access Maintenance Mode from the local console Maintenance ModeTo apply a system software patch To install a new system software image on SANbox SSPUpdating SANbox SSP System Software Interpreting the LED Patterns To install a new Maintenance Mode image on SANbox SSPTo replace the fans To replace the power suppliesPost and the LEDs Replacing Hardware ComponentsTo replace a transceiver About the TransceiversPage Before Looking at the Problem Statements TroubleshootingBACK-END Storage not Found LOOP/FABRIC Problem Statements and Troubleshooting ProceduresCannot LOG Into SANbox SSP GUI or CLI Cannot Access SANbox SSP Console PortInitiator not Found by SVM Media Performance CharacteristicsStandards High Availability FeaturesStorage Management Electrical Device ManagementMechanical EnvironmentalRegulatory Table B-1. Commands by Object Type Command Line Interface CLI OverviewCommand Quick Reference by Object Command Syntax and Command Completion Example Help CommandsOnline Help To telnet to the CLI from a web browser Accessing the CLIFigure B-2. Telnet Console Login Screen Figure B-3. Telnet Console Menu Options Users and GroupsTable B-2. Built-In Users and Groups Group group name Commands Clear CommandCreate User Command Delete User CommandDisable port Disable Eth CommandDisable Port Command Disable eth ethernet nameSyntax disable snmpv3 Disable snmpv3 CommandDisable User Command Enable Eth CommandEnable User Command Enable Port CommandEnable snmpv3 Command Keywords help partial command name Exit CommandHelp Command Modify Eth Command Help CommandsModify Date Command Type port type Modify Port CommandCapability port capability Speed port speedPorts type port type Modify Ports CommandMaxframesize size in bytes Speed port speed NEGOTIATE, 1G, 2G Modify Timezone CommandModify User Command PasswordReset port Quit CommandReboot Command Reset Port CommandShow Chassis Command Restart snmp CommandSet Community Command Serialnum Show Community CommandShow Date Command Show Debug CommandFcsluns DumpFcptstate FcsexchShow Eth Command Show fan Show Eths CommandShow Fan Command Show ethsShow ID Command Show Fans CommandShow Group Command Show Groups CommandShow ports Show Ports CommandKeywords show port port number Show ps Show ps CommandKeywords show ps power supply number Show ps Show Therm Command Show pss CommandShow snmpv3 Command Show Status CommandShow Users Command Show Therms CommandShow Timezone Command Show User CommandVersion Command Show Voltage CommandShow Voltages Command Active/Active RAID Active Boot SetBoot Set Default Boot SetFailover Inactive Boot SetInvalid Boot Set Maintenance Mode ImageStorage Pool Valid Boot SetScsi Personality Secondary PathVirtual Disk Virtual VolumeIndex LEDs 3-10,6-5 SN0054628-00 a Index-3 SVM GUI SN0054628-00 a Index-5