Cisco Systems UCS C420 manual Replacing the Supercap Power Module RAID Backup Unit

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Chapter 3 Maintaining the Server

Installing or Replacing Server Components

Replacing the Supercap Power Module (RAID Backup Unit)

The server supports installation of up to two RAID controllers and up to two supercap power modules (SCPMs). These SCPMs mount to trays that are on the removable air baffle.

The SCPM is available only when using the LSI MegaRAID-CV controller cards. This module provides approximately 3 years of backup for the disk write-back cache DRAM in the case of sudden power loss by offloading the cache to the NAND flash.

Warning There is danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.

Statement 1015

To replace the supercap power module, follow these steps:

Step 1 Remove an SCPM (see Figure 3-28):

a.Power off the server as described in Shutting Down and Powering Off the Server, page 3-8.

b.Slide the server out the front of the rack far enough so that you can remove the top cover. You might have to detach cables from the rear panel to provide clearance.

Caution If you cannot safely view and access the component, remove the server from the rack.

c.Remove the top cover as described in Removing and Replacing the Server Top Cover, page 3-9.

d.Disconnect the cable that is attached to the SCPM.

e.Remove the SCPM tray from the air baffle. Pinch the retaining clip on the side of the tray and slide it toward the rear to remove the tray from the air baffle.

Note There are two trays, an upper tray and a lower tray. Remove only the tray that holds the SCPM that you are replacing.

f.Remove the SCPM from the clips on the SCPM tray. Step 2 Install a new SCPM:

a.Slide the new SCPM into the clips on the SCPM tray.

b.Replace the SCPM tray to the air baffle. Slide it forward in the air baffle guides until the tray retaining clip clicks and locks in place.

c.Connect the cable from the RAID controller to the new SCPM.

d.Replace the top cover.

e.Replace the server in the rack, replace cables, and then power on the server by pressing the Power button.

 

 

Cisco UCS C420 Server Installation and Service Guide

 

 

 

 

 

 

OL-27640-01

 

 

3-49

 

 

 

 

 

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Contents Americas Headquarters Cisco UCS C420 Server Installation and Service GuidePage N T E N T S Special Considerations for Cisco UCS Virtual Interface Cards For More Information C-6 OL-24342-01 Chapter Title Description AudienceOrganization Bewaar Deze Instructies ConventionsAviso Instruções Importantes DE Segurança Warnung Wichtige SicherheitshinweiseAvvertenza Importanti Istruzioni Sulla Sicurezza Guarde Estas Instrucciones GEM Disse Anvisninger Xii Xiii Documentation Feedback Related DocumentationOverview of the Cisco UCS C420 Server 2shows the rear panel features of the server Standard 1lists the features of the serverCisco UCS C420 Server Features Statement Installing the ServerUnpacking and Inspecting the Server Server Documentation Power cord up to two KVM cableInstallation Guidelines Preparing for Server InstallationEquipment Requirements Slide Rail Adjustment RangeRack Requirements This section describes how to install the server in a rack Installing the Server In a RackInserting the Server into the Slide Rails Attaching the Cable Management Arm This section includes the following topics Initial Server SetupConnecting and Powering On the Server Standalone Mode Installing the Server Initial Server Setup OL-27640-01 NIC Modes and NIC Redundancy Settings Updating the Bios and Cimc Firmware System Bios and Cimc FirmwareAccessing the System Bios DIP Switch Location on the I/O Riser Service DIP SwitchIf These Steps do not Recover the Bios Using the Bios Recovery DIP SwitchInstalling the Server Service DIP Switch Cisco Integrated Management Interface Server Configuration UtilityServer Monitoring and Management Tools Front-Panel LEDs Status LEDs and ButtonsLED Name State Rear-Panel LEDs and Buttons Rear-Panel LEDs and ButtonsRear-Panel LED States LED Name State LED Name State Internal Diagnostic LEDsRequired Equipment Preparing for Server Component InstallationShutting Down and Powering Off the Server Release buttons Front cover panel Removing and Replacing the Server Top CoverSee also -23 on page 3-40for details Replaceable Component LocationsColor-Coded Touch Points Installing or Replacing Server ComponentsDrive Population Guidelines Replacing Hard Drives or Solid State DrivesRelease button Drive tray securing screws Ejector lever Drive Replacement ProcedureDrive Bay Assembly and Transition Card Two Versions Replacing a Modular Drive Bay AssemblyOL-27640-01 Removing and Replacing the Drive-Bay Module FAN Replacing Fan Modules11 Removing and Replacing Fan Modules Replacing a Fan Tray 12 Removing and Replacing a Fan Tray Dimm Performance Guidelines and Population Rules Replacing DIMMsCPU Black Socket Color# of DIMMs Memory Mirroring Mode Dimm Replacement Procedure Replacing CPUs and Heatsinks Open the hinged CPU cover plate. See Figure CPU Replacement Procedure14 CPU Retaining Latches 16 Removing or Inserting a CPU Icon. See -14 on 18 Thermal Grease Application Pattern Replacing the Motherboard RTC Battery 19 Removing and Replacing the Motherboard RTC Battery Replacing a PCIe Riser Assembly 20 Removing and Replacing the PCIe Riser Assembly 21 I/O Riser, Including SD Card Slots Replacing an I/O Riser22 Removing and Replacing an I/O Riser Riser in designated motherboard socket Riser securing screwReplacing an Internal SD Card PCIe Slots Replacing a PCIe CardPrimary Slot Secondary Slot Alternate Slots Slot Number Lane Width Connector LengthElectrical Card Length1 NCSI3 Support24 PCIe Riser Assembly Side View PCIe card socket on PCIe riser assembly Card retaining clipReplacing a PCIe Card in a Motherboard Slot 25 Hinged PCIe Card Retainer on Rear of Chassis Use With UCS Upstream Nexus Server VICs Mode Firmware Integration Fabric InterconnectMinimum Firmware for Nexus OS on an Supported Cisco Card NICResolving Insufficient Memory Space to Execute Option ROMs Resolving Insufficient 16-Bit I/O Space 27 vNIC Properties Dialog Replacing the Supercap Power Module RAID Backup Unit 28 Removing the Scpm Installing a Trusted Platform Module 29 TPM Socket Location on Motherboard Set TXT Support to Enabled 30 Removing and Replacing Power Supplies Replacing Power SuppliesEnabling or Disabling the Internal USB Port OL-27640-01 Description Specification Physical SpecificationsTable A-1lists the physical specifications for the server Power Specifications Environmental SpecificationsLength Power Cord Description Feet Meters Supported Power Cords and PlugsPower Cord, 250 VAC 13 a Nema 6-15 Plug North America Power Cord, 250 VAC 10 a CEI 23-16 Plug ItalyPower Cord, 250 VAC 10 a MP232 Plug Switzerland Power Cord, 250 VAC 13 a IEC60320 Plug North AmericaCAB-9K10A-AU AC Power Cord IllustrationsCAB-9K10A-EU CAB-9K10A-SW CAB-N5K6A-NA Figure B-13 CAB-C13-CBN, Jumper Power Cord 0.68 m OL-24342-01 With expander3 Two controllers with two nonexpanders Supported RAID Controllers and Required CablesMaximum Optional Required Cables1 Controller Style Drives RAID LevelsMix of Drive Types RAID Group Allowed? Supercap Power Modules RAID Backup UnitsMixing Drive Types in RAID Groups RAID Controller Cabling334371 334646 334373 For More Information Foreign configurations found on adapterPage OL-27640-01 Installation for Cisco UCS Integration OL-24342-01