Compaq StorageWorks Fibre Channel Troubleshooting Guide

Chapter 4
StorageWorks RAID Array 4000 and 4100
Troubleshooting Flow Charts
This chapter contains troubleshooting flow charts that will help diagnose problems on a FC-AL
in an RA4000 and RA4100 Storage System. The flow charts are listed by problem symptoms or
troubleshooting procedures, as follows:
■ Overview of the Troubleshooting Flow Charts (page 4-2)
■ Verify System Operation (4-4)
■ Determine a Bad Link (4-6)
■ Some Fibre Array Controllers are Detected (page 4-7)
■ Visual and Physical Inspection of the FC-AL (page 4-10)
■ Checking the Link between the Storage Hub and the Fibre Channel Array Controller (page
4-12)
■ Checking the Link between the Storage Hub and the Fibre Channel Host Bus Adapter
(page 4-15)
■ Fibre Channel Loopback Test (4-17)