Procedure: SAN problem determination
You can solve problems on the SAN Volume Controller system and its connection to the storage area network (SAN).
About this task
SAN failures might cause SAN Volume Controller 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 either the maintenance analysis procedures or the error codes sent you here, complete the following steps:
Procedure
- If the customer changed the SAN configuration by changing the Fibre Channel cable connections or switch zoning, verify that the changes were correct and, if necessary, reverse those changes.
- Verify that the power is turned on to all switches and storage controllers that the SAN Volume Controller system uses, and that they are not reporting any hardware failures. If problems are found, resolve those problems before you proceed further.
- Verify that the Fibre Channel cables that connect the systems to the switches are securely connected.
- If the customer is running a SAN management tool, you can use that tool to view the SAN topology and isolate the failing component.