User Manual

182 Troubleshooting
Most common problem areas
See Table 29 for a list of the most common problem areas that arise within SANs and a list of tools that
can be used to resolve the problems.
Gathering information for technical support
Common steps and questions to ask yourself when troubleshooting a system problem are as follows:
1. What is current Fabric OS level?
2. What is switch hardware version?
3. Is the switch operational?
Table 29 Common troubleshooting problems and tools
Problem area Investigate Tools
Fabric
• Missing devices
• Marginal links (unstable
connections)
• Incorrect zoning configurations
• Incorrect switch configurations
• Switch LEDs
• Switch commands for diagnostics
(command line)
• Web or GUI-based monitoring and
management software tools
• Real-time distributed fabric operating
system with advanced diagnostics
Storage devices
• Physical issues between switch
and devices
• Incorrect storage software
configurations
• Device LEDs
• Storage diagnostic tools
Hosts
• Incorrect host bus adapter
installation
• Incorrect device driver
installation
• Incorrect device driver
configuration
• Host adaptor LEDs
• Host operating system diagnostic tools
• Device driver diagnostic tools
Storage management
applications
Incorrect installation and
configuration of the storage
devices that the software
references.
For example, if using a
volume-management application,
check for:
• Incorrect volume installation
• Incorrect volume configuration
Application-specific tools and resources