Q-Logic 8200 SERIES manual High-Availability Configuration

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2 – General Description Supported Network Configurations

Q

2.3.3

High-Availability Configuration

High availability describes a system that is operational a high percentage of the time. Through dual redundancy, a system can maintain high availability in the presence of any single component failure.

Use of redundant components, multipathing, and failover help protect against failures and ensure high availability. Implementing SVM agents on SANbox SSP provides high availability by allowing the use of multiple paths between servers and storage, and ensuring that no single point of failure can prevent access to data.

Failover is a backup operational mode in which the functions of a system component (such as, a server, network, or storage controller, for example) are assumed by secondary system components when the primary component becomes unavailable through either failure or scheduled down time.

With the proper multipathing software running on the host, a high-availability configuration can guarantee access to data even in the event of one or possibly more hardware, software, or infrastructure failures. With the addition of multiple hosts running supported clustering software, even host failures can be tolerated without interrupting critical applications.

In addition to continuous operation through unplanned failures, a correctly set up high-availability configuration enables administrators to take components of the system offline for maintenance or replacement, again without interrupting access to data.

Figure 2-4shows a recommended high-availability configuration with cross-connected fabric. Within each fabric, zoning is used to partition the front-side initiator ports, both StoreAge SVM ports, and back-side storage. Each server has multiple HBAs installed, with at least one HBA connected to each of two redundant front-side fabrics. Each HBA sees the same virtual disks on each of two redundant SANbox SSPs. Each SANbox SSP has access to physical storage through at least two paths, across two fabrics and at least two RAID controllers. Two SVMs can each manage either or both SANbox SSP units. Two independent fabrics and host failover software ensure availability.

2-6	SN0054628-00 A

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Contents SANbox 8200 Series Storage Services Platform Page Table of Contents Using the SANbox SSP Section SANbox SSP Management GUI ReferenceSection Troubleshooting Figures Tables Page Introduction Readme File AudienceRelated Documentation Style Conventions Regulatory and Safety Notices New in this ReleaseManufacturer Declaration of ConformityProduct Introduction Regulatory and Safety Notices Warranty and Technical Support Before Contacting Technical SupportTraining AvailabilityContact Information Introduction Warranty and Technical Support SN0054628-00 a SANbox SSP and StoreAge Solution Overview General DescriptionSANbox SSP/StoreAge Solution Features SANbox SSP OverviewSupported Network Configurations Small SAN Deployment Configuration with ZoningSmall SAN Configuration with Front/Back-Side SANs Dual Fabric ConfigurationHigh-Availability Configuration High-Availability Fabric Configuration How the Solution Protects Against Failures Setup RequirementsEthernet Connections Port Connections Fibre Channel Port ConnectionsConsole Port Connection General Description Port Connections SN0054628-00 a Roadmap of Setup Tasks Task RoadmapChecking Package Contents Setting Up SANbox SSP SANbox 8200/8202 SSP Port SideSetting Up SANbox SSP Hardware SANbox 8200/8202 SSP Fan SideTo install the power supplies To mount SANbox SSP in a rackInserting the Right Power Supply To connect the console portTo configure the terminal settings on the host computer Accessing SANbox SSP for the First TimeTo power up SANbox SSP To access the CLI through the serial console portTo modify Ethernet settings for remote access Gateway NetmaskConnecting to the SAN Connecting StoreAge SVM Appliances to the SANConnecting SANbox SSPs to the SAN To connect SANbox SSPs to the SANManaging your Configuration Connecting Hosts to the SANTo connect hosts to the SAN Page SANbox SSP Management GUI Reference Managing SANbox SSPUsing the SANbox SSP Management GUI To install Java WebStartQLogic SANbox Storage Services Platform SSP Screen SANbox SSP Management GUI Application Installation Screen To log into the SANbox SSP Management GUITo access the CLI using telnet Using the Command Line Interface RemotelyUsing the Command Line Interface Locally To access the CLI using sshNavigating the SANbox SSP Management GUI SANbox SSP Management GUI FunctionsSystem To manage external port behaviorEnabling and Disabling Ports Ethernet Panel System System Ethernet PanelSensors Panel System System Sensors PanelDiagnostics To use the Diagnostics panelTelnet Telnet Screen Initiated from the SANbox SSP Management GUI10. Diagnostic Screen Log Panel LogPage Using the SANbox SSP Setting up a High-Availability ConfigurationComponent SAN Zoning High-Availability Fabric Configuration with Zoning Directly Connecting Devices to SANbox SSP Yellow zone Pink zoneAccess Configuring StorageZoning Configuration Restriction on RAID Devices Maximum Frame SizeUsing the SVM GUI to Manage Virtual Storage To create storage poolsTo create virtual volumes Guidelines for Selecting the Storage Device ProfileFailing Back Click Fail BackTo restart SANbox SSP from the CLI To shut down SANbox SSP using the Main Power SwitchShutting Down SANbox SSP To shut down SANbox SSP from the CLIUsing the SANbox SSP Shutting Down SANbox SSP SN0054628-00 a Maintaining the SANbox SSP SANbox SSP System SoftwareBoot Sets To select the active boot set from the local consoleMaintenance Mode To access Maintenance Mode from the local consoleUpdating SANbox SSP System Software To install a new system software image on SANbox SSPTo apply a system software patch To install a new Maintenance Mode image on SANbox SSP Interpreting the LED PatternsReplacing Hardware Components To replace the power suppliesPost and the LEDs To replace the fansAbout the Transceivers To replace a transceiverPage Troubleshooting Before Looking at the Problem StatementsProblem Statements and Troubleshooting Procedures BACK-END Storage not Found LOOP/FABRICCannot Access SANbox SSP Console Port Cannot LOG Into SANbox SSP GUI or CLIInitiator not Found by SVM Performance Characteristics MediaStorage Management High Availability FeaturesStandards Environmental Device ManagementMechanical ElectricalRegulatory Command Quick Reference by Object Command Line Interface CLI OverviewTable B-1. Commands by Object Type Command Syntax and Command Completion Online Help Help CommandsExample Accessing the CLI To telnet to the CLI from a web browserFigure B-2. Telnet Console Login Screen Users and Groups Figure B-3. Telnet Console Menu OptionsTable B-2. Built-In Users and Groups Delete User Command Commands Clear CommandCreate User Command Group group nameDisable eth ethernet name Disable Eth CommandDisable Port Command Disable portEnable Eth Command Disable snmpv3 CommandDisable User Command Syntax disable snmpv3Enable snmpv3 Command Enable Port CommandEnable User Command Help Command Exit CommandKeywords help partial command name Modify Date Command Help CommandsModify Eth Command Speed port speed Modify Port CommandCapability port capability Type port typeMaxframesize size in bytes Modify Ports CommandPorts type port type Password Modify Timezone CommandModify User Command Speed port speed NEGOTIATE, 1G, 2GReset Port Command Quit CommandReboot Command Reset portSet Community Command Restart snmp CommandShow Chassis Command Show Debug Command Show Community CommandShow Date Command SerialnumFcsexch DumpFcptstate FcslunsShow Eth Command Show eths Show Eths CommandShow Fan Command Show fanShow Groups Command Show Fans CommandShow Group Command Show ID CommandKeywords show port port number Show Ports CommandShow ports Keywords show ps power supply number Show ps Show ps CommandShow ps Show Status Command Show pss CommandShow snmpv3 Command Show Therm CommandShow User Command Show Therms CommandShow Timezone Command Show Users CommandShow Voltages Command Show Voltage CommandVersion Command Default Boot Set Active Boot SetBoot Set Active/Active RAIDMaintenance Mode Image Inactive Boot SetInvalid Boot Set FailoverSecondary Path Valid Boot SetScsi Personality Storage PoolVirtual Volume Virtual DiskIndex LEDs 3-10,6-5 SN0054628-00 a Index-3 SVM GUI SN0054628-00 a Index-5