User manual HP COMPAQ STORAGEWORKS 4100 RAID ARRAY COMPAQ STORAGEWORKS FIBRE CHANNEL TROUBLESHOOTING GUIDE

[. . . ] Fibre Channel Troubleshooting Guide Sixth Edition (January 2000) Part Number 297877-006 Compaq Computer Corporation Notice The information in this publication is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED "AS IS" AND COMPAQ COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST INFRINGEMENT. This publication contains information protected by copyright. [. . . ] Fault LEDs and vacant GBIC receptacle LEDs will remain off. Restart the Storage System and the server or servers affected. Replacing a Fibre Channel Tape Controller When a Fibre Channel Tape controller fails in an online active system: 1. Perform a normal system shutdown of both the Fibre Channel Tape controller and the server or servers. Remove the Fibre Channel cable connector from the failed Fibre Channel Tape controller. Remove the SCSI cable connectors from the Fibre Channel Tape controller. Replace the failed Fibre Channel Tape controller. Attach the Fibre Channel cable connector, removed earlier, to the connector on the controller. Attach the SCSI cable, removed earlier, to the connector on the Fibre Channel Tape controller. Restart the Fibre Channel Tape controller and the server or servers effected. Chapter 2 Fibre Channel Fault Isolation Utility The Fibre Channel Fault Isolation Utility (FFIU) verifies the integrity of a new or existing FCAL installation. When used with troubleshooting flow charts, this utility provides fault detection and help in locating a failing device on the FC-AL. Each device on the FC-AL has an Arbitrated Loop Physical Address (ALPA). The ALPA is allocated dynamicallyit can change with each power-up or as new devices are added to the loop. The fault isolation utility indicates all devices that are active on the FC-AL. The utility dynamically updates the screens to show the current ALPA of each component. Additionally, a Loop Error Histogram is displayed when specific servers or components are highlighted to further analyze the health of individual components. The utility analyzes Fibre Channel components including the Host Bus Adapter and the Fibre Channel Tape Controller. The Fibre Channel Storage Hub 12 is logically transparent to the operations of the FC-AL, but even a failed Storage Hub 12 can be detected when the Fault Isolation Utility is used in combination with the Troubleshooting Flow Charts. Installing the Utility The latest files for the Fibre Channel Fault Isolation Utility, as well as information about installing the utility, are located on the Compaq SmartStart and Support Software CD. Running the Utility To run the Fibre Channel Fault Isolation Utility: 1. Insert the SmartStart and Support Software CD in the CD-ROM drive. Select Run Fibre Channel Interconnect Diagnostics. The Windows-based utility will load automatically. 2-2 Compaq StorageWorks Fibre Channel Troubleshooting Guide Program Displays The utility's main display is shown below. It displays each FC-AL from the perspective of the server. All Fibre Host Bus Adapters in the server are shown with a slot number and indicate a PCI (/P) or EISA (/E). NOTE: The Enterprise Backup Solution only supports PCI Host Bus Adapters to ensure adequate performance. Each Fibre Channel Array and Fibre Channel Tape Controller is shown as a branch of the Fibre Host Adapter that it is connected to. [. . . ] When a GBIC is installed correctly and the port is not in the bypass mode (normal), the LED is not lit. A-4 Fibre Channel Troubleshooting Guide Figure A-5. Bypass Mode LEDs Storage Hub 12 When power is applied, all LEDs will turn on during the self-test, which lasts 15 to 60 seconds. After the power self test, the Power LED stays on, the Fault LED turns off. Figure A-6 shows the location of the Power and Fault LEDs. Fault r Powe Figure A-6. [. . . ]