HP StorageWorks 8/24 HP StorageWorks Fabric OS 5.2.x administrator guide (5697 - Page 283
Analyzing connection problems, Storage software such as EMC Control Center, Veritas SPC, etc.
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Use the following steps to retrieve as much of the following informational items as possible prior to contacting HP. 1. Switch information: • Serial number (located on the chassis) • World Wide Name (obtain using licenseIdShow or wwn commands) • Fabric OS version (obtain using the version command) • Switch configuration settings • supportSave output • pdShow and saveCore output 2. Host information: • OS version and patch level • HBA type • HBA firmware version • HBA driver version • Configuration settings 3. Storage information: • Disk/tape type • Disk/tape firmware level • Controller type • Controller firmware level • Configuration settings • Storage software (such as EMC Control Center, Veritas SPC, etc.) Analyzing connection problems If a host is unable to detect its target (for example, a storage or tape device), you should begin troubleshooting the problem in the middle of the data path. Determine if the problem is above or below the starting point, then continue to divide the suspected problem path in half until you can pinpoint the problem. To check the logical connection 1. Enter the switchShow command. 2. Review the output and determine if the device is logically connected to the switch: • A device that is logically connected to the switch will be registered as an F_Port or L_Port. • A device that is not logically connected to the switch will be registered as something other than an F_Port or L_Port. 3. If the missing device is logically connected, proceed to the next troubleshooting procedure ("To check the Name Server (NS)" on page 285. 4. If the missing device is not logically connected, check the device and everything on that side of the data path. Also refer to "Correcting link failures" on page 297. This includes all aspects of the host OS, the driver settings and binaries, the device Basic Input Output System (BIOS) settings, the SFP, the cable going from the switch to the device, the SFP on the switch side of that cable, and all switch settings related to the device. Refer to "To check for a loop initialization failure" on page 297 as the next potential trouble spot. To check for Fibre Channel connectivity problems 1. Enter the fcPing command, which: • Checks the zoning configuration for the two ports specified. • Generates an Extended Link Service (ELS) frame ECHO request to the source port specified and validates the response. • Generates an ELS ECHO request to the destination port specified and validates the response. Fabric OS 5.2.x administrator guide 283
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