Compaq ProLiant CL1850 System Memory Troubleshooting Best Practices for HP Pro
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- Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 1
has developed several methods for troubleshooting memory problems in ProLiant servers. The purpose of this white paper is to assist HP customers in troubleshooting system memory problems by successfully isolating the specific DIMMs causing the problem. This helps to prevent nonessential replacement - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 2
Why Should I Troubleshoot Every Memory Problem? Accurate diagnosis of system memory problems in ProLiant servers has many advantages, including: • Prevents unnecessary hardware replacement. • Prevents the return of parts that test NFF (No Fault Found). • Prevents server downtime. Best Practice: Many - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 3
following HP system tools whenever a memory problem is suspected. HP System Management Homepage The HP System Management Homepage supplies a consolidated view of system hardware health, configuration, performance and status information for individual HP servers. Details are provided on total system - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 4
HP System Management Homepage HP Systems Insight Manager (HP SIM) HP Systems Insight Manager monitors the health of the hardware in the system and polls installed hardware for its status every few minutes. Refer to Figure 2 below for an example of events displayed on the System page. For more - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 5
Figure 2: HP Systems Insight Manager 5 - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 6
logs record the status of hardware events, including memory issues. For servers running Microsoft Windows operating systems, either of the following logs can be a valuable resource: • Integrated Management Log (IML) • Event Viewer For servers running Linux operating systems, refer to either of - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 7
the Start menu. Figure 4 shows an example of server events that are logged in this tool. Figure 4: Event Viewer (Microsoft Windows Operating Systems for system memory errors. From the Linux Command Prompt, type "hplog -v" and the entire IML will be displayed. Any detected system memory error will - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 8
slots indicate a failure. The example below is from a ProLiant DL380 G4 system board; however, similar graphics for specific systems can be found in server user guides and other system documentation. Memory Problem Indicators Example DL 380 G4 DIMM Slot LEDs on the System Board 9/5/2006 5 DIMM - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 9
the following URL: http://h18013.www1.hp.com/products/servers/management/hpid/index.html Troubleshooting Using HP Insight Diagnostics Online Edition HP Insight Diagnostics Online edition is available in HP ProLiant Support Packs. The Insight Diagnostics Online edition performs various non-intrusive - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 10
a very small Linux kernel is used. Helpful Links: HP Insight Diagnostics User Guide: www.hp.com/servers/diags Troubleshooting Flowcharts The following troubleshooting flowcharts can be used as another tool for diagnosing specific DIMMs that have failed. They can be used as a general guideline and - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 11
General Troubleshooting Flowchart for a Bootable System Using HP insight Diagnostics 11 - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 12
General Troubleshooting Flowchart for a Non-Bootable System Use this flowchart to help diagnose a memory problem in any of the following conditions: • The system stops responding and displays a "parity error" message on the screen during boot. • The system beeps and all - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 13
What Role Does Firmware Play in Troubleshooting Memory Problems? Many product issues that result in hardware replacement, including issues in which memory problems are suspected, are preventable or correctable with a firmware update. HP recommends checking for a firmware update before sending a part - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 14
to the Online ROM Flash User Guide at the following URL: http://www.compaq.com/support/files/server/us/webdoc/rom/OnlineROMFlashUserGuide.pdf Smart Components for HP ProLiant servers and storage can be obtained from the following links: Microsoft Windows Operating Systems: http://h18023.www1.hp - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 15
ROM Flash Smart Components can be downloaded to the drive key from the following URL and deployed using the ROM Update Utility: http://h18023.www1.hp.com/support/files/server/us/smartstartGP.html System ROM support is required for the HP Drive Key Utility. To determine server support, refer to - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 16
.com/products/servers/technology/whitepapers/adv-technology.html#2 Other Troubleshooting Resources The HP ProLiant Troubleshooting Guide is located at the following URL and may be helpful in diagnosing memory or other system problems: http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00300504 - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 17
PAE Support Is Not Enabled In Microsoft Windows Server 2003: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=PSD_EM04 0802_CW01&jumpid=reg_R1002_USEN First Edition of the HP ProLiant DL380 Generation 5 User Guide Incorrectly States that Advanced ECC Memory Single - Compaq ProLiant CL1850 | System Memory Troubleshooting Best Practices for HP Pro - Page 18
contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable
System Memory Troubleshooting Best Practices for HP
ProLiant Servers
Accurately troubleshooting system memory issues in ProLiant server configurations is an important process that
can help prevent unnecessary replacement of hardware components. In addition, accurate problem diagnosis
prevents customers from experiencing unnecessary downtime while waiting for hardware that may not need
to be replaced.
Following standard troubleshooting guidelines and using them each time a memory issue is
suspected helps to establish this.
HP has developed several methods for troubleshooting memory problems in ProLiant servers.
The purpose of this white paper is to assist HP customers in troubleshooting system memory problems by
successfully isolating the specific DIMMs causing the problem. This helps to prevent nonessential replacement
of unaffected DIMMs or, in some cases, entire banks of memory. In addition, effective troubleshooting can
help determine if a firmware or other software download can resolve a problem without replacing hardware.
This white paper covers the following topics:
•
Why should I troubleshoot every system memory problem?
•
How can I tell if a memory problem has occurred?
•
What tools are available from HP to help identify a failing DIMM?
•
Troubleshooting using HP Insight Diagnostics Online Edition
•
Troubleshooting using HP Insight Diagnostics Offline Edition
•
Troubleshooting flowchart for bootable systems
•
Troubleshooting flowchart for non-bootable systems
•
What role does firmware play in solving system memory problems?
•
Why Buy HP Memory?
•
Other troubleshooting resources