HP StorageWorks 2000 Series Reference Manual page 207

If the fault isolation firmware disables a PHY, the event log shows a message like
the following:.
When a PHY has been disabled manually, the event log shows a similar message
with a different reason:
1. Ensure that the cables are securely connected. If they are not, tighten the connectors.
2. Reset the affected controller or power-cycle the enclosure.
3. If the problem persists, replace the affected FRU or enclosure.
4. Periodically examine the Expander Status page to see if the fault isolation firmware
disables the same PHY again. If it does:
a. Replace the appropriate cable.
b. Reset the affected controller or power-cycle the enclosure.