Upon completion of this module, you should be able to:
Identify storage troubleshooting strategies for the enterprise environment
Troubleshooting a variety of storage faults on available lab equipment
Use available administration tools to troubleshoot and isolate storage-related problems

 

The primary purpose of the enterprise environment is to keep the systems, applications, and information available to all users.
  No scheduled downtime
  Software tools take hot-pluggable components offline
  Alternate pathing

 

Basic concepts for the purposes of AP:
  An I/O device is either a disk or network
  An I/O controller is the controller board for an I/O device
  An I/O port is a connector on a controller board
  A device node is a physical device; for example, /dev/dsk/c0t0d1s0

 

How AP Software Helps in Repairs
It replaces parts in an AP-devices path
The AP device has one active and one inactive alternate paths:
  The inactive alternate path is disabled
  Components in the disabled alternate path are replaced
  The disabled alternate path is tested and enabled
  The active alternate path is switched to the path just repaired
The second alternate path is repaired in the same way

 

General Troubleshooting Guidelines
The following steps are recommended when troubleshooting failing Fibre Channel loops:
1,Check the software and firmware revisions against the latest matrix. Always upgrade to latest revisions, if necessary
2,Identify the suspect loop
3,Test and reproduce the failure
4,Diagnose the failure and repair

 

To run the Loop Integrity Test:
1,Identify the controller number of the suspect loop
2,Choose the StorTools Display Configuration selection from the stormenu main menu
3,Select the Configuration Summary option from the Dislay Configuration Menu