Infortrend 170 manual Replacing a failed Dimm Module, When should a Dimm module be replaced?

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SentinelRAID Installation and Hardware Reference Manual

When replacing any of the controller components, it is necessary to access the controller board in controller canister. It is recommended that all power to the controller canister is turned off when maintenance procedures are being carried out.

If the DIMM module, controller board or daughter board fail, the maintenance operations must be completed as soon as possible.

If either the BBU module or the BBU charger board fail, it is not necessary to perform maintenance operations immediately. Because all I/O access to the controller will be shut off for the duration of the maintenance procedure, it is recommended that you carefully select the time when maintenance operations will be carried out.

5.2.Replacing a failed DIMM Module

5.2.1When should a DIMM module be replaced?

There are two instances when a DIMM module should be replaced:

Case 1: DIMM module fails

If a DIMM module fails it must be replaced immediately. The controller cannot function without a DIMM module and is therefore rendered inoperable. In this instance, DIMM module replacement becomes a priority and must be replaced as soon as possible.

Case 2: DIMM module with larger capacity required

If the capacity of the currently installed DIMM module is not sufficient, it can be replaced with a larger capacity DIMM module. In this instance, it is best to replace the DIMM module during the least busy time as the controller will have to be powered down and removed.

5.2.2DIMM Module Replacement Procedure

Step 1. Power off the controller. Prior to removing the controller module, it is necessary to power off the controller.

Step 2. Access the controller module. The DIMM module is located on the controller board. To replace the DIMM module, remove the chassis top cover and open the chassis. The complete removal procedure is described in Chapter 2, Section 2.6.2.

Step 3. Remove the optional daughter board. If an optional daughter board has been installed, it must be removed. The DIMM module is located beneath the daughter board. See Section 5.4.2 below.

5-2

Replacing a failed DIMM Module

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Contents Installation and Hardware Reference Manual 320MB/sec SCSI-to-SCSI RAID ControllerContact Information Asia Pacific International HeadquartersChina AmericasCopyright This Edition First PublishedDisclaimer TrademarksThis device is in conformity with the EMC Table of Contents Controller Monitoring Appendix C Hardware Troubleshooting Safety Precautions Precautions and InstructionsESD Precautions About This ManualWho should read this manual? ConventionsRelated Documentation NamingSoftware and Firmware Updates Chapter Introduction Product OverviewProduct Introduction Enclosure Controller BoxFront Side Rear SideSR Components LCD PanelController Board Connector Type Label Description JP1 and JP13Interfaces Controller Board FrontConnector Type Label Description SR Accessory Items Separately Purchased Accessory ItemsPower Connector 4 I2C Signal Compatible CablesBattery Backup Unit BBU Optional ItemsPower Supply Requirements Environmental RequirementsDaughter Board Expansion LED Indicators SR Controller MonitoringCooling Requirements 1 I2C BusAudible Alarms This page is intentionally left blank Chapter Installation Installation OverviewInstallation Prerequisites General ConsiderationsHardware Installation Preparation Static-free InstallationTools or Equipment Needed for Installing the Subsystem Planning Before InstallationGeneral Installation Procedure Unpacking the ControllerAccessing the Controller Board OverviewRemoving and Replacing the Chassis Top Cover Memory Module Installation Dimm Module Installation ProcedureSelecting the DIMMs Battery Backup Unit BBU Installation About the First BBU InstallationBBU Installation Procedure Remove the Battery Connector CapInstall the Battery Charger Board Daughter Board Installation About Daughter Board InstallationDaughter Board Installation Procedure Daughter Board Installation Chapter Controller Monitoring Controller Monitoring OverviewStatus-indicating LEDs PWRAudible Alarm Default Threshold ValuesI2C Port Enclosure Monitoring I2C Port Enclosure Monitoring 1 I/O Channel Configuration Chapter Controller Connections OperationSentinelRAID Connection Host ConnectionSR 170 Topologies Drive ConnectionScsi Termination Unique IDsSR 170 Topologies Dual Host Connection Dual Host ConnectionController Integration ExpansionPower Connection Connecting RS-232C Terminal EmulationOther Connections Power On Check ListPower On Sequence LCD ScreenPower Off Procedure Stop I/O access to the system Disconnect the hostPower Off Procedure Chapter Controller Maintenance Controller Maintenance OverviewAbout Controller Maintenance User Serviceable ComponentsWhen should a Dimm module be replaced? Dimm Module Replacement ProcedureReplacing a failed Dimm Module Replacing a failed Dimm Module About BBU Maintenance Replacing a Failed Optional BBU ModuleOnce the controller board has pack from the charger board Daughter Board Maintenance BBU Charger Board ReplacementAbout Daughter Board Maintenance Replacing a Daughter BoardRemove the Daughter Board Retention Screws This page is intentionally left blank Appendix a SentinelRAID Features Flexible ConfigurationUser-friendly Configuration Utilities SCSI-320 I/O ChannelsOther Fault Tolerant Features Controller ArchitectureGlobal and Local Spares Hot-swapping of DrivesRAID Levels Supported Controller ChassisThis page is intentionally left blank Appendix B Hardware Specifications ConfigurationSpecification Feature Controller Architecture RAID ManagementFault Tolerance Technical Specifications Specification SizeDescription Specification SoftwareController Specifications Technical Specifications Appendix C Hardware Troubleshooting ProblemProblem Installed. Reinstall a Dimm module will usually solve This page is intentionally left blank Appendix D Spare Parts and Accessories AccessoriesAccessory Part Number Description Spare PartsAccessories Appendix E Connectors and Jumper Identification Controller Main Board InterfacesLabel Connector Name Controller Main Board Interface DescriptionsLED Jumper Pin Outs COM Port Pin OutsPin Description Symbol Type Description J3 I2C PortPin Pin Name J1 Battery Connector Symbol Parameter Rating UnitTTL Device Parameters PinIFT- 9011 Null Modem IFT-9012 RS-232C Extension CableIndex SentinelRAID 170 Installation and Hardware Reference Manual Index This page is intentionally left blank