IBM BladeCenter QS21 Type 0792, Service Manual

Page 1: ...BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

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Page 3: ...BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

Page 4: ...C Notices on page 113 and the Warranty and Support Information on the Documentation CD Fifth Edition September 2008 Copyright International Business Machines Corporation 2006 2008 US Government Users...

Page 5: ...erver firmware levels 17 Updating the BMC firmware 18 Using the BMC update package 18 Using the Advanced Management Module 18 Installing the system firmware 20 The firmware update package 21 Using the...

Page 6: ...Problems indicated by the system board LEDS 54 Power problems 57 Power throttling 57 Network connection problems 57 Service processor problems 58 Software problems 58 Recovering the system firmware c...

Page 7: ...recycling and disposal 115 Battery return program 116 Electronic emission notices 117 Federal Communications Commission FCC statement 117 Industry Canada Class A emission compliance statement 118 Avis...

Page 8: ...vi BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

Page 9: ...ert eerst de veiligheidsvoorschriften Ennen kuin asennat t m n tuotteen lue turvaohjeet kohdasta Safety Information Avant d installer ce produit lisez les consignes de s curit Vor der Installation die...

Page 10: ...ds such as loose or missing hardware To inspect the product for potential unsafe conditions complete the following steps 1 Make sure that the power is off and the power cord is disconnected 2 Make sur...

Page 11: ...isconnected from a circuit Check it to make sure that it has been disconnected v If you have to work on equipment that has exposed electrical circuits observe the following precautions Make sure that...

Page 12: ...s in this documentation before performing the instructions Read any additional safety information that comes with the blade server or optional device before you install the device x BladeCenter QS21 T...

Page 13: ...quipment when there is evidence of fire water or structural damage v Disconnect the attached power cords telecommunications systems networks and modems before you open the device covers unless instruc...

Page 14: ...ium battery replace it only with the same module type made by the same manufacturer The battery contains lithium and can explode if not properly used handled or disposed of Do not v Throw or immerse i...

Page 15: ...e device v Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure DANGER Some laser products contain an embedded Cla...

Page 16: ...ice and the power switch on the power supply do not turn off the electrical current supplied to the device The device also might have more than one power cord To remove all electrical current from the...

Page 17: ...act a service technician Statement 13 DANGER Overloading a branch circuit is potentially a fire hazard and a shock hazard under certain conditions To avoid these hazards ensure that your system electr...

Page 18: ...handling ADVERTENCIA El contacto con el cable de este producto o con cables de accesorios que se venden junto con este producto pueden exponerle al plomo un elemento qu mico que en el estado de Califo...

Page 19: ...User s Guide This printed document contains general information about the blade server including how to install supported options and how to configure the blade server v Safety Information This docum...

Page 20: ...he instruction or situation in which damage could occur v Caution These statements indicate situations that can be potentially hazardous to you A caution statement is placed just before the descriptio...

Page 21: ...witch in the rear of the chassis and various options to attach storage to that integrated SAS switch An optional SAS expansion card is available for the BladeCenter QS21 Storage can be attached via th...

Page 22: ...nit or power off the BladeCenter unit To avoid loss of data shut down the Linux operating system before you turn off the blade server Shut down the operating system by entering the shutdown h now comm...

Page 23: ...onfigure the Advanced Management Module to turn off the blade server automatically if the system is not operating correctly Note After turning off the blade server wait at least 5 seconds before turni...

Page 24: ...ule or through IBM Director Console Blade error LED This amber LED lights when a system error has occurred in the blade server Power control button Press this button to turn the blade server on or off...

Page 25: ...ocation LED can be turned off through the BladeCenter Management Module Web interface System board LEDs The BladeCenter QS21 has status LEDs on the system board to indicate the health of various compo...

Page 26: ...ror LED JDIM01 Error LED JDIM 00 Light path diagnostics switch Light box Temperature fault LED System board LED NMI error LED CPU fail LED Light path diagnostics LED NMI CPU SBRD TEMP LP 1 JDIM00 slot...

Page 27: ...to the blade server The command line interface See Using the command line interface on page 10 for further information Serial over LAN SOL This is similar to the serial interface but allows you to con...

Page 28: ...nt for your Web session The BladeCenter management and configuration window opens For additional information see the IBM BladeCenter Advanced Management Module User s Guide Using the command line inte...

Page 29: ...Module This is the System Management Services SMS utility program The SMS utility program allows you to view and update the VPD change the boot list and set network parameters Starting SMS Complete t...

Page 30: ...bout the machine type or model serial number and the universal unique ID Complete the following steps to see this information 1 Start SMS by completing the above steps The SMS menu appears PowerPC Fir...

Page 31: ...he process stops to allow you to enter the machine type or model and serial number Boot does not continue until the information is provided To enter new FRU information complete the following steps 1...

Page 32: ...tions on the screen and press Enter to continue 5 You must confirm the model number PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2000 2005 2007 All rights reserved Number entered is...

Page 33: ...Accept number Enter y or Y to accept or n or N to decline Select Navigation key Type y or Y and press Enter to confirm the number This completes the process and the blade server continues to boot as...

Page 34: ...ility to restart the server at a time when it is most convenient to do so As a best practice use the online update packages to perform all of your basic update functions IBM periodically makes updates...

Page 35: ...nd revision level of both the system firmware BIOS and the BMC firmware In the example above the system firmware or BIOS version is QB01020000 and the BMC firmware is BNBT06b Compare this information...

Page 36: ...lete the following steps to update the BMC firmware from the Linux command prompt 1 Check the README that comes with the BMC firmware as it contains specific information about that particular firmware...

Page 37: ...e blade server you want to update target and browse to the firmware image file 6 Click on Update 7 The validity of the image is checked then the following screen appears Chapter 2 Configuring the blad...

Page 38: ...hooting on page 51 for further information about troubleshooting the BladeCenter QS21 blade server You can update the system firmware v Through IBM Director See the IBM Director documentation on the I...

Page 39: ...his has a chg extension v A file containing the update package This has an sh extension v A readme file for the update package This contains specific installation and configuration information v An XM...

Page 40: ...uctions Installing the firmware manually If you cannot update the firmware using the update_flash script it is possible to update the firmware manually You can use rtas_flash over proc Complete the fo...

Page 41: ...are two commands you can use to update an old image on PERM v From the Linux prompt issue the following command update_flash c Note The script checks whether the board has booted from the TEMP image...

Page 42: ...h modules that are mentioned in this section see the documentation that comes with the Ethernet switch module that you are using Updating the Ethernet controller firmware To update the Ethernet contro...

Page 43: ...rectory where you have downloaded the package 4 Run the package with the u option Using the example from above at the command prompt enter brcm_fw_nic_2 0 3 e 1_rhel5_cell sh u During the update proce...

Page 44: ...gement in the BladeCenter Management Module Web interface 3 Enable only one of the Ethernet controller ports on the blade server Note the designation that the blade server operating system has for the...

Page 45: ...service technicians For information about the terms of the warranty and getting service and assistance see Warranty and Support Information The following table lists which replaceable components are a...

Page 46: ...28 BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

Page 47: ...You do not have to turn off the blade server or disconnect the BladeCenter unit from power to install or replace any of the hot swappable modules on the rear of the BladeCenter unit v Before you remov...

Page 48: ...Movement can cause static electricity to build up around you v Handle the device carefully holding it by its edges or its frame v Do not touch solder joints pins or exposed printed circuitry v Do not...

Page 49: ...wappable bays Therefore you can install or remove the blade server without removing power from the BladeCenter unit However you must turn off the blade server before removing it from the BladeCenter u...

Page 50: ...r and lift the outer cover open see Figure 6 4 If you want to remove the cover carefully lift it from the cover pins and set it aside see Figure 6 Statement 21 CAUTION Hazardous energy is present when...

Page 51: ...s energy is present when the blade server is connected to the power source Always replace the blade cover before installing the blade server Installing the optional InfiniBand card The InfiniBand card...

Page 52: ...the connector cover 6 Locate the expansion card locator pins at the back of the system board 7 Locate the connector and ball socket on the InfiniBand card Locator pin holes Locking clip Handling areas...

Page 53: ...If you do not want to install any other options replace the cover and insert the BladeCenter QS21 into the BladeCenter unit Attention The connectors on the system board and the InfiniBand card are not...

Page 54: ...a single pair of DIMMs you must use slots JDIM00 and JDIM11 The BladeCenter QS21 supports VLP DDR2 512 MB DIMMs only Note The DIMMs are used as memory for the I O buffers only You cannot increase the...

Page 55: ...til the retaining clips snap into position Make sure that the clips are locked properly 8 Repeat steps 6 and 7 until you have installed all the optional DIMMs 9 Ensure that all unused DIMM slots are f...

Page 56: ...position 7 Repeat step 6 until all unused slots are fitted with DIMM fillers 8 Replace the cover and insert the BladeCenter QS21 into the BladeCenter unit Installing the SAS expansion card The BladeC...

Page 57: ...m board engages with the ball socket on the SAS expansion card 8 If you do not want to install any other options replace the cover and insert the BladeCenter QS21 into the BladeCenter unit Connectors...

Page 58: ...elines on page 29 2 Remove the blade server cover and set it aside See Opening and removing the blade server cover on page 32 for further information 3 Remove the connector cover or any optional card...

Page 59: ...on page 29 2 Open the blade server cover 3 Carefully disconnect the control panel cable from the control panel connector 4 Press the front bezel release on both sides of the system board and pull the...

Page 60: ...defective system board See Adding FRU information on page 13 for details 13 Configure the replacement blade server to boot from the same device as the original defective unit See the QS21 Installatio...

Page 61: ...nstallation guidelines on page 29 2 Follow any special handling and installation instructions that come with the battery 3 If the blade server is operating shut down the operating system by typing the...

Page 62: ...tery clip holds the battery securely 10 Close the blade server cover see Closing the blade server cover on page 49 Statement 21 CAUTION Hazardous energy is present when the blade server is connected t...

Page 63: ...ly Release Bezel Blade Cover Control Panel Connector Control Panel Cable I O E pansion Option NOTES DIMM DIMM Slot 00 DIMM Slot 01 DIMM Slot 11 DIMM Slot 10 Light Path Diagnostics Button Press button...

Page 64: ...ion the replacement ball stud over the hole and screw into position taking care not to over tighten as this might damage the system board 46 BladeCenter QS21 Type 0792 Problem Determination and Servic...

Page 65: ...re installing the blade server 4 Reinstall the blade server into the BladeCenter unit 5 Turn on the blade server See Turning on the blade server on page 3 for further information 6 If you have replace...

Page 66: ...refully slide the front bezel assembly onto the blade server as shown in Figure 23 until it clicks into place Note Make sure that you do not pinch any cables when you reinstall the front bezel assembl...

Page 67: ...lots at the rear slide down onto the pins at the rear of the blade server as shown Figure 24 Before closing the cover make sure that all components are installed and seated correctly and that you have...

Page 68: ...50 BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

Page 69: ...the BladeCenter unit v All components are connected correctly v The BladeCenter QS21 has the latest firmware updates These include BMC System Gigabit Ethernet controller SAS expansion card if install...

Page 70: ...n See Related documentation on page 1 for additional information For the latest editions of the IBM BladeCenter documentation go to http www ibm com support us en on the World Wide Web Troubleshooting...

Page 71: ...on LED remains on until turned off by Advanced Management Module or through IBM Director Console Check Advanced Management Module to see what the problem is See the BladeCenter Management Module User...

Page 72: ...or use slots 1 5 3 Go to Power problems on page 57 Problems indicated by the system board LEDS The blade server must be removed from the BladeCenter unit and the cover removed before you can use the...

Page 73: ...ates Ethernet 0 is active and sending or receiving packets BE0_PLL_LOCK Green D8 Indicates the phased lock loop of Cell B E 0 is working BE1_PLL_LOCK Green D13 Indicates the phased lock loop of Cell B...

Page 74: ...MI pinhole reset on the front panel has been pressed Pressing the reset causes the operating system to call the system debugger CPU fail Yellow One of the Cell BE processors has failed Contact your IB...

Page 75: ...s you may need to have a trained service technician replace the system blade assembly Power throttling Be aware that the BladeCenter unit automatically reduces the BladeCenter QS21 processor speed if...

Page 76: ...determined problems on page 95 Software problems Symptom Suggested action You suspect a software problem 1 To determine whether the problem is caused by the software make sure that v The blade server...

Page 77: ...lade system management processor from the Advanced Management Module 3 Turn on the blade server Note If the temp side is corrupted the boot times out and an automatic reboot occurs after switching to...

Page 78: ...detailed below 1 The first part of the boot process shows the system name and build date You see an error at this point if the firmware image is corrupted QS21 Firmware Starting Check ROM OK Build Da...

Page 79: ...to continue booting the system Type reset all and press enter to reboot the system disable nvram logging done 4 The next screen displays system information It shows revision information about the chip...

Page 80: ...can also provide diagnostics for the following system components v Baseboard Management Controller v Memory stress v CPU stress Additionally DSA creates a merged log that includes events from all coll...

Page 81: ...will not occur the next time you run the diagnostic programs If there are multiple error codes or light path diagnostics LEDs that indicate a microprocessor error the error might be in a microprocesso...

Page 82: ...tive action 089 802 xxx Abort System resource availability error 089 801 xxx Abort Internal program error BMC test results Table 6 BMC test results Test Number Status Extended results Actions I2C test...

Page 83: ...reported memory size is the same as the installed memory size complete the following steps Otherwise go to step 8 a Turn off the system and disconnect it from power b Reseat all the system DIMMs with...

Page 84: ...evel and upgrade if necessary The installed firmware level can be found in the DSA Diagnostic Event Log within the Firmware VPD section for this component The latest level firmware for this component...

Page 85: ...ecessary The installed firmware level can be found in the DSA Diagnostic Event Log within the Firmware VPD section for this component The latest level firmware for this component can be found on the I...

Page 86: ...pport us en 6 Run the test again 7 If the test continues to fail refer to the other sections of this chapter for diagnosis and corrective action 166 802 xxx BMC Abort BMC I2C test canceled the test ca...

Page 87: ...ode can be found on the IBM Support Web site at http www ibm com support docview wss uid psg1SERV DSA 5 Check BMC firmware level and upgrade if necessary The installed firmware level can be found in t...

Page 88: ...C I2C test canceled a command response could not be provided BMC initialization is in progress 166 822 xxx BMC Abort BMC I2C test canceled the destination is unavailable 166 823 xxx BMC Abort BMC I2C...

Page 89: ...e system and disconnect it from power 4 Reseat the DIMMs 5 Reconnect the system to power and turn on the system 6 Run the test again 7 Execute the standard DSA memory diagnostic to validate all memory...

Page 90: ...s and handling The following sections describe boot errors and actions you can take to resolve these errors Boot list The following table describes boot list errors Table 9 System firmware boot list e...

Page 91: ...compatibility issues If the problem persists contact your IBM service representative E3407 Load failed Load or boot failed to load requested file from the device This is informational message and may...

Page 92: ...ks Configuration Boot Sequence If the problem persists contact your IBM service representative System firmware update errors The following table describes system firmware errors that can occur if ther...

Page 93: ...ive as the system board may need replacing E1200 System memory init failure during second pass calibration CPU halted Since the first pass calibration succeeded either the CPU or the system XDR memory...

Page 94: ...E5020 USB Unknown media format The media is not recognized by the firmware Insert a suitable bootable CD E5030 USB Device communication error Firmware cannot communicate with the BladeCenter USB devi...

Page 95: ...ork boot errors The following table describes the network boot errors Table 13 Network boot errors Code Message Description Action E3000 net Could not read MAC address The firmware could not establish...

Page 96: ...erver reported a file access violation Check the file name and the permissions of the file that should be downloaded E3011 net illegal TFTP operation The TFTP server is not able to handle the request...

Page 97: ...oot errors These error messages only appear if you have installed the optional SAS daughter card Table 14 SAS boot errors Code Message Description Action E4303 LSISAS1064 controller initialization fai...

Page 98: ...Ensure the SAS Expansion Card firmware and blade firmware version are at the correct level 5 If the error started after a SAS Expansion Card firmware upgrade or a blade server firmware upgrade conside...

Page 99: ...SAS Expansion Card firmware and blade firmware version are at the correct level 5 If the error started after a SAS Expansion Card firmware upgrade or a blade server firmware upgrade consider a rollbac...

Page 100: ...e the SAS Expansion Card firmware and blade firmware version are at the correct level 5 If the error started after a SAS Expansion Card firmware upgrade or a blade server firmware upgrade consider a r...

Page 101: ...ith the documentation at http www ibm com systems bladecenter support to verify whether rollback is possible 4 If the error has started reporting after an Open Firmware script change for example in a...

Page 102: ...then remove and reinstall the blade server in the BladeCenter unit 3 If the error started after a blade server firmware update consider a rolling back to the previous firmware version Check with the d...

Page 103: ...documentation at http www ibm com systems bladecenter support to verify whether rollback is possible 4 Update the blade firmware 5 If the error started after an Open Firmware script change for example...

Page 104: ...read the disk from another blade server in the same BladeCenter unit This verifies SAS topology and remote storage operation as well Note Concurrent access to a disk from a different blade server mig...

Page 105: ...ce the DIMM with a DIMM with an SDRAM data width of 8 lanes E2031 Data error The DIMM is defective Replace the DIMM with a new one E2032 Address line error The DIMM is defective Replace the DIMM with...

Page 106: ...ges Code Message Description Action E1001 Boot ROM CRC failure The firmware image was found to be inconsistent during bootup The inconsistency might be due to image corruption during flash update or m...

Page 107: ...the blade If the problem persists contact your IBM service representative as the system board assembly may need replacement BMC firmware messages The following is a description of the BMC firmware mes...

Page 108: ...Warning Temperature 73 C Standard mode Cell B E processor 1 Temp above Warning Temperature 82 C Information Blade throttled Throttle Reduce Frequency This is a BladeCenter unit operation which reduces...

Page 109: ...ove Shut Off Temperature 100 C Error Processor 3 SB1 Temp critical fault Power Off The temperature of the system board has reached a critical level Cell B E companion chip 2 Temp above Shut Off Temper...

Page 110: ...ng the state of all the voltage signals Power Off Reboot If the error condition continues report the exact error message to IBM service Voltage 10 not BE voltage Error Blade voltage fault None Other E...

Page 111: ...n PCIe Channel 0 NMI Error DIAGS SB1 NMI PCI E P00 Error Cell B E companion chip 2 indicates an error on PCIe Channel 0 NMI Error DIAGS SB0 NMI PCI E P01 Error Cell B E companion chip 1 indicates an e...

Page 112: ...e name QS21 event log txt 6 Create a tgz file using the following commands tar cvfz QS21 error log customer date tgz tmp PROBLEM txt tmp QS21 fw nvram img where customer Contains a short name of the c...

Page 113: ...ector is correctly seated on the system board see Removing the blade server front bezel assembly on page 41 for the location of the connector 4 If no LEDs on the control panel are working of the blade...

Page 114: ...ilure been reported before v Diagnostic program type and version level v Hardware configuration print screen of the system summary v BIOS code level v Operating system type and version level You can s...

Page 115: ...les Elpida 512MB 3200 MHz XDRlibrary v0 32 Bin A C RevB DualDD Calibrate Done Test Done SYSTEM INFORMATION Processor Cell B E TM DD3 2 3200 MHz I O Bridge Cell BE companion chip DD2 x Timebase 26666 k...

Page 116: ...anguage that is used to display the SMS menus A screen similar to the following appears PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2000 2005 2007 All rights reserved Select Langua...

Page 117: ...en similar to the following appears PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2000 2005 2007 All rights reserved Network Parameters NET axon 10000000000 plb5 plb4 pcix 4000004600...

Page 118: ...ancel and return to the main menu press Esc Adapter Configuration This allows you to set network parameters for the adapter PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2000 2005 20...

Page 119: ...address in turn Advanced Setup DHCP You do not need to use this option unless your network requires a specific block size or filename PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2...

Page 120: ...o install or boot from the BladeCenter unit media tray you must first allocate it to the blade server using the Advanced Management Module PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Co...

Page 121: ...oot devices in list order until it finds a boot device If it does not an error is generated and placed in the Advanced Management Module You may only list boot devices if they are allocated or availab...

Page 122: ...type the number and press Enter To save your selection press M to return to the menu Firmware Boot Side Options Normally the BladeCenter QS21 boots from the Temporary side and you should not change th...

Page 123: ...ory Creating common NVRAM partition C0880 Could not find SAS partition in NVRAM created Adapters on 000001460ec00000 00 0800 D 14e4 16a8 network ethernet 00 0900 D 14e4 16a8 network ethernet Adapters...

Page 124: ...ine type or model and serial number Boot does not continue until the information is provided To enter new FRU information complete the following steps 1 Using a Telnet or SSH client connect to the Adv...

Page 125: ...g to the instructions on the screen and press Enter to continue 5 You must confirm the model number PowerPC Firmware Version HEAD SLOF SMS 1 6 c Copyright IBM Corp 2000 2005 2007 All rights reserved N...

Page 126: ...t IBM Corp 2000 2005 2007 All rights reserved Number entered is ABCDEFG Accept number Enter y or Y to accept or n or N to decline Select Navigation key Type y or Y and press Enter to confirm the numbe...

Page 127: ...007 All rights reserved Change SAS Boot Device Address Current SAS Disk Address Default 0 0 Navigation Keys M return to Main Menu ESC key return to previous screen X eXit System Management Services Ty...

Page 128: ...eturn to previous screen X eXit System Management Services Type new LUN Id in hexadecimal and press Enter or select navigation key The LUN Id can be obtained from the Storage System Profile utility Se...

Page 129: ...M product The documentation that comes with BladeCenter systems also describes the diagnostic tests that you can perform Most BladeCenter systems operating systems and programs come with documentation...

Page 130: ...ibm com services us or see http www ibm com planetwide for support telephone numbers In the U S and Canada call 1 800 IBM SERV 1 800 426 7378 Hardware service and support You can receive hardware serv...

Page 131: ...0504 1785 U S A INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES O...

Page 132: ...e internal clock speed of the microprocessor other factors also affect application performance CD or DVD drive speed is the variable read rate Actual speeds vary and are often less than the possible m...

Page 133: ...dar a los propietarios de equipos a reciclar sus productos de TI Se puede encontrar informaci n sobre las ofertas de reciclado de productos de IBM en el sitio web de IBM http www ibm com ibm environme...

Page 134: ...ation on disposal of batteries outside the United States go to http www ibm com ibm environment products index shtml or contact your local waste disposal facility In the United States IBM has establis...

Page 135: ...ative For California Perchlorate material special handling may apply See http www dtsc ca gov hazardouswaste perchlorate The foregoing notice is provided in accordance with California Code of Regulati...

Page 136: ...hkeit in den EU Mitgliedsstaaten und h lt die Grenzwerte der EN 55022 Klasse A ein Um dieses sicherzustellen sind die Ger te wie in den Handb chern beschrieben zu installieren und zu betreiben Des Wei...

Page 137: ...oduct including the fitting of non IBM option cards This product has been tested and found to comply with the limits for Class A Information Technology Equipment according to CISPR 22 European Standar...

Page 138: ...Japanese Voluntary Control Council for Interference VCCI statement Korean Class A warning statement 120 BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

Page 139: ...memory 8 microprocessor 8 system board 8 controller enumeration 26 Ethernet 23 cover closing 40 49 cover continued opening 32 removing 32 D danger statements 2 device driver Ethernet controller 24 DI...

Page 140: ...dentifying problems 54 light box LEDs 54 Linux operating system 59 M media tray select button 6 memory specifications 2 3 memory module specifications 3 microprocessor specifications 3 miscellaneous p...

Page 141: ...4 storage support for local 3 supported boot media 59 system board connectors 8 LEDs 7 replacing 41 system boot 60 boot error list 72 boot errors 72 I O DIMM boot errors 86 network boot error messages...

Page 142: ...124 BladeCenter QS21 Type 0792 Problem Determination and Service Guide...

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Page 144: ...Part Number 42C4969 Printed in USA 1P P N 42C4969...