Texas Memory Systems RamSan-300/320 manual Introduction, Overview

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Chapter 1 – Introduction

1.1Overview

The RamSan-3xx series solid-state disk uses SDRAM (memory) as its primary storage. This technology enables practically instantaneous data access, which results in dramatic application performance increases.

Texas Memory Systems (TMS) designed the RamSan to be highly available and fault tolerant. The system has higher availability than RAID or JBOD systems because the primary storage media is SDRAM, which does not require moving parts. Additionally, SDRAM has a very high mean time between failures (as high as several hundred years) according to some studies. The mechanical components in the RamSan are redundant and hot swappable.

The RamSan-320’s internal disk drives provide a fully non-volatile solution. The RamSan-320 has three modes of operation: Active BackupTM mode, DataSync mode, and Mirror mode. For more information on these three modes, see Section 6.9 - Setting backup mode.

The RamSan complements existing disk drives, JBOD, or RAID, in performance sensitive applications. Servers perceive the RamSan as another attached SCSI disk drive. For some applications, the RamSan is the only storage system required. For applications that store terabytes of data, storage administrators add the RamSan to systems that include RAID or JBOD.

Connect the RamSan via Fibre Channel to host servers, NAS filers, or storage network switches and hubs. If you have specific compatibility questions, please contact Texas Memory Systems.

Use the RamSan in a variety of applications. If hard disk drives slow down your application, there is a good chance that the RamSan can speed it up.

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 Conventions Safety PrecautionsPreface Document OverviewFollowing table describes revisions to this document Revision HistoryOverview IntroductionSystem Components PowerNon-Volatility Active BackupTM mode optional Configurable BackupPerformance System Inspection InstallationBattery Warning Electro-Static Discharge WarningRamSan-320 FC 4 FC Connecting the Fibre Channel PortsConnecting the Power Supplies Rack MountingPower switch Power AC VoltageTurning on the System AC Voltage indicator lightSystem Initialization System is now ready for normal operation Front Panel Display Management Tool OverviewText Management Interface Connecting using a terminal programFront Panel menu system layout General interface layout and instructions Connecting using TelnetText Management Interface Sub-Menu Scrolling Sub-Menus Web Management InterfaceWeb Management Interface Logging into the system Administration FunctionsSet password SecurityClick on the Management Control Processor graphic Via Web InterfaceVia Text Management Enable/disable TelnetVia Web Management Enable/Disable TelnetTelnet Setup From the Telnet Main Menu, select Management setupEnable/disable Snmp Enable/disable Web InterfaceConfiguring Ethernet settings via Front Panel Configuring Ethernet settingsDhcp Subnet Mask Select IP assignment mode Configuring Ethernet settings via Text Management InterfaceSelect Select hostname Power Down SettingsManual shutdown Via Front Panel DisplayAutomatic shutdown From the Telnet Main Menu, select Power down systemFront panel monitoring Restore/Synchronize ProgressMonitoring Functions Viewing system health and statusStatus ErrorFibre Channel Performance Active Monitor ModeLED Display LED Performance MonitoringIdentify Device button Identifying a RamSanSystem Uptime Status Viewing system uptimeHealth and Status From the Telnet Main Menu, select Health and StatusDisk Status via Web interface Viewing system healthBatteries Not displayed for the RamSan-300 Management Control Processor Power supplies Fans Good 10 Fibre Channel Controller Status via Web Interface Viewing detailed fibre channel controller statusVia Text Management Viewing IO/second summary Via Web Interface Statistics13 IO/sec Summary 14 Bandwidth Performance Graph via Web Interface Viewing bandwidth summary15 Bandwidth Performance via Text Management Interface Click the Management Control Processor graphic LogsViewing controller details Viewing the system event and support logsClearing the system event log Clearing logged ECC errorsController LUN ConfigurationGigabytes System Memory Fibre ChannelReconfigured LUN Mapping Example LUN configurationVia Web Interface Adding LUNsSelect Change size of LUNs to add From the Telnet Main Menu, select LUN Setup Select Add LUNsVia Text Management Select Change number of LUNs to addVia the Web Interface Viewing LUN status / LUN mapTo view the LUNs for the entire system Viewing LUNs Assigned to FC ports via Web Interface LUN Map Screen Linking LUNs to/from Fibre Channel ControllersVia Text Management Linking Fibre Channel Controllers Select Exit to the LUN configuration menuSelect Unlink LUNs from selected controller Unlinking Fibre Channel ports from LUNSelect Assign different LUN # to this LUN Changing LUN numbersSelect Resize LUN Resizing LUNsViewing Current Access Lists Managing access listsSelect Print detailed WWN mask list for LUN Deleting Access Lists Adding Access ListsSelect Delete WWN mask from LUN Select Set Scsi device identifier Setting Scsi device identifiers14 Deleting LUNs via Web Interface Deleting LUNs15 Deleting LUNs Setting backup modeSelect Set backup mode for this LUN Volatile mode optional Changing Fibre Channel topology and link speed Fibre Channel Controller ConfigurationSelect Change link speed Select Change topologySelect Save changes and exit Auto-Detect Error From the Telnet Main Menu, select Controller setup Configuring high availabilityPrimary Active Secondary Passive, Primary is Primary Active, Secondary isPrimary Passive, Secondary is Secondary Active, Primary is Hot Swapping Power Supplies System MaintenanceHot Swapping Disk Drives Fans BatteriesSupport Log TroubleshootingStill Having Problems… System Event LogNon-operating Environment SpecificationsPhysical Characteristics Operating EnvironmentFigure A-1 MCP-65 Management Control Processor Appendix a RamSan-3xx Series Replacement PartsFigure B-3 Power Supply Module Figure A-6 120 Gigabyte Replacement Hard Drive Appendix B FCC/Safety Notices Repairs/Returns Field ServiceReturn to Factory Telephone and Software SupportGold Warranty On-site Repair Business Hours Silver Warranty Advanced Parts ReplacementPlatinum Warranty On-site Repair 24/7 Outside of Warranty