Procedure: SAN problem determination

You can solve problems with the system and its connection to the storage area network (SAN) with the optional Fibre Channel host interface adapter.

SAN failures might cause system volumes to be inaccessible to host systems. Failures can be caused by SAN configuration changes or by hardware failures in SAN components.

The following list identifies some of the hardware that might cause failures:
  • Power, fan, or cooling
  • Application-specific integrated circuits
  • Installed small form-factor pluggable (SFP) transceiver
  • Fiber-optic cables

If error codes sent you here, complete the following steps:

  1. Verify that the power is turned on to all switches and storage controllers that the system uses, and that they are not reporting any hardware failures. If problems are found, resolve those problems before you proceed further.
  2. Verify that the Fibre Channel cables that connect the systems to the switches are securely connected.
  3. If you have a SAN management tool, use that tool to view the SAN topology and isolate the failing component.