SAN fault isolation and troubleshooting

7.1.3 SAN fault isolation and troubleshooting

In addition to providing tools for monitoring and configuring a SAN, one of the key benefits that a well-designed management mechanism can bring is the ability to efficiently detect, diagnose and solve problems in a SAN.
There are many tools to collect the necessary data in order to perform problem determination and problem source identification (PD/PSI) in a SAN. Generally speaking, these tools offer the ability to:
  • Interrogate the fabric.
  • Find devices or LUNs that have gone missing.
  • Identify storage device or server failures.
  • Identify fabric failures (usually by means of ping and traceroute).
  • Interpret message and error logs.
  • Fire events when failures are detected.
  • Check for zoning conflicts.
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