DS8000 Service Documentation Version 6.3.3

MAP5440 Fibre host card reports a loss of light

A fibre host card in the storage facility has detected and reported a loss of light from an attached host system. When a storage facility fibre host card detects a loss of light, the problem is normally external to the storage facility. This is reported to the host system as a status condition. A serviceable event is not created for this condition. A separate serviceable event is created if the fibre host card detects an internal operational error.

Before you begin

Customer disruption can occur if microcode and power boundaries are not in the proper conditions for this service action. Verify that you start all service activities in Start here.

MAP5440 Section-1

Procedure

Use information from the customer to determine which fibre host card in the storage facility has reported the loss of light.
Note: A serviceable event is not created for this condition.
Repair any related serviceable events for the fibre host card. Refer to MAP1210 Displaying and repairing a serviceable event.
Observe the green and yellow LED indicators on that fibre host card. With a loss of light condition, the green LED should be blinking slowly (1 per second) and the yellow LED should be off. A loss of light problem is normally not caused by the storage facility. These problems are normally external to the storage facility. Use the standard Fibre Channel isolation procedures (not included in this service guide) to restore light to the fiber cable connected to this fibre host card.