Texas Memory Systems RamSan-300/320 manual System Maintenance, Hot Swapping Power Supplies

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Chapter 8 – System Maintenance

One of the main features of the RamSan is the ability to hot swap many of the system components. You can hot swap the power supplies and disk drives, meaning that you can remove and replace these components while the system is running.

8.1 Hot Swapping Power Supplies

The RamSan-3xx series includes two power supplies. The system only requires one functioning power supply to run. Texas Memory Systems has taken special care to enclose the RamSan power supplies in a protective case to minimize the electrical risks for users; however, it is critical for users to follow the following steps when removing and replacing the power supplies:

•Disconnect the power cord from the power supply.

•Wait 15 seconds.

•Remove the power supply that needs to be replaced from the RamSan chassis by pressing the release switch and pulling squarely on the power supply handle. DO NOT REACH INSIDE THE PROTECTIVE ENCLOSURE AFTER REMOVING THE POWER SUPPLY.

•Insert the replacement power supply in the RamSan chassis. Make sure to insert the power supply squarely and press firmly until the power supply is fully inserted into the system.

•Reconnect power to the new power supply.

•The new power supply begins to operate immediately.

Important:

Replace failed power supplies as soon as possible.

8.2 Hot Swapping Disk Drives

The RamSan-320 includes three internal hard disk drives in a RAID configuration. The system can operate with all disks operational, one disk operational, or no disks operational. Two drives are for striped data and the third is for parity information.

If a single hard disk drive fails, the system continues to write to the available hard disk drives. When this occurs, replace the malfunctioning disk with a new hard disk drive. Once inserted, the system synchronizes the new disk. While the restore degrades overall system write performance, read operations continue uninterrupted.

Important:

Do not remove disk drives during synchronization. Removing disk drives may destroy data on all disks, which requires removing and replacing all drives for a complete synchronization with memory.

RamSan-300/320 User’s Manual

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Contents RamSan-300/320 User’s Manual RamSan-300/320 User’s Manual Table of Contents Batteries Fans Safety Precautions PrefaceDocument Overview ConventionsRevision History Following table describes revisions to this documentIntroduction OverviewNon-Volatility PowerSystem Components Configurable Backup Active BackupTM mode optionalPerformance Installation Battery WarningElectro-Static Discharge Warning System InspectionRamSan-320 Connecting the Fibre Channel Ports Connecting the Power SuppliesRack Mounting FC 4 FCPower AC Voltage Power switchSystem Initialization AC Voltage indicator lightTurning on the System System is now ready for normal operation Management Tool Overview Front Panel DisplayFront Panel menu system layout Connecting using a terminal programText Management Interface Connecting using Telnet General interface layout and instructionsText Management Interface Sub-Menu Web Management Interface Scrolling Sub-MenusWeb Management Interface Administration Functions Set passwordSecurity Logging into the systemVia Web Interface Click on the Management Control Processor graphicEnable/disable Telnet Via Text ManagementEnable/Disable Telnet Via Web ManagementFrom the Telnet Main Menu, select Management setup Telnet SetupEnable/disable Web Interface Enable/disable SnmpConfiguring Ethernet settings Configuring Ethernet settings via Front PanelDhcp Subnet Mask Configuring Ethernet settings via Text Management Interface Select IP assignment modePower Down Settings Manual shutdownVia Front Panel Display Select Select hostnameFrom the Telnet Main Menu, select Power down system Automatic shutdownRestore/Synchronize Progress Monitoring FunctionsViewing system health and status Front panel monitoringError StatusActive Monitor Mode Fibre Channel PerformanceLED Performance Monitoring LED DisplayIdentifying a RamSan Identify Device buttonViewing system uptime System Uptime StatusFrom the Telnet Main Menu, select Health and Status Health and StatusViewing system health Disk Status via Web interfaceBatteries Not displayed for the RamSan-300 Management Control Processor Power supplies Fans Good Viewing detailed fibre channel controller status 10 Fibre Channel Controller Status via Web InterfaceVia Text Management Statistics Viewing IO/second summary Via Web Interface13 IO/sec Summary Viewing bandwidth summary 14 Bandwidth Performance Graph via Web Interface15 Bandwidth Performance via Text Management Interface Logs Viewing controller detailsViewing the system event and support logs Click the Management Control Processor graphicClearing logged ECC errors Clearing the system event logLUN Configuration Gigabytes System MemoryFibre Channel ControllerExample LUN configuration Reconfigured LUN MappingAdding LUNs Via Web InterfaceFrom the Telnet Main Menu, select LUN Setup Select Add LUNs Via Text ManagementSelect Change number of LUNs to add Select Change size of LUNs to addTo view the LUNs for the entire system Viewing LUN status / LUN mapVia the Web Interface Viewing LUNs Assigned to FC ports via Web Interface Linking LUNs to/from Fibre Channel Controllers LUN Map ScreenSelect Exit to the LUN configuration menu Via Text Management Linking Fibre Channel ControllersUnlinking Fibre Channel ports from LUN Select Unlink LUNs from selected controllerChanging LUN numbers Select Assign different LUN # to this LUNResizing LUNs Select Resize LUNSelect Print detailed WWN mask list for LUN Managing access listsViewing Current Access Lists Select Delete WWN mask from LUN Adding Access ListsDeleting Access Lists Setting Scsi device identifiers Select Set Scsi device identifierDeleting LUNs 14 Deleting LUNs via Web InterfaceSetting backup mode 15 Deleting LUNsSelect Set backup mode for this LUN Volatile mode optional Fibre Channel Controller Configuration Changing Fibre Channel topology and link speedSelect Save changes and exit Select Change topologySelect Change link speed Auto-Detect Error Primary Active Configuring high availabilityFrom the Telnet Main Menu, select Controller setup Primary Passive, Secondary is Primary Active, Secondary isSecondary Passive, Primary is Secondary Active, Primary is Hot Swapping Disk Drives System MaintenanceHot Swapping Power Supplies Batteries FansTroubleshooting Still Having Problems…System Event Log Support LogSpecifications Physical CharacteristicsOperating Environment Non-operating EnvironmentAppendix a RamSan-3xx Series Replacement Parts Figure A-1 MCP-65 Management Control ProcessorFigure B-3 Power Supply Module Figure A-6 120 Gigabyte Replacement Hard Drive Appendix B FCC/Safety Notices Field Service Return to FactoryTelephone and Software Support Repairs/ReturnsPlatinum Warranty On-site Repair 24/7 Silver Warranty Advanced Parts ReplacementGold Warranty On-site Repair Business Hours Outside of Warranty