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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
Troubleshooting and Problem Solving
10.9 Host Fibre Channel Problems
Problem: The host system does not see the EF2800.
Verify in the Monitor EF2800 > Status > FC Port Status page (or in the
Disk Array Administrator, the <Ctrl>-<E> CFG Info screen) that the
host channel FC World Wide Name is valid. Verify that the port ID is
active and a valid arbitrated loop port address (AL_PA) is assigned.
Verify the array LUN numbers are configured correctly and not
overlapping.
Problem: The FC host port and switch or HBA do not establish a link.
When changing from Loop to Point to Point mode after already
establishing a public loop connection, the switch may ignore
subsequent attempts to perform point-to-point initialization. Take one
of the following actions to establish the point to point connection:
• Physically disconnect and reconnect the FC cable.
• Configure the switch port to force point-to-point mode.
• Change the link speed for that port on the EF2800 and then change
it back. The switch recognizes the change from loop to point to
point due to the disruption caused when going to the other link
speed (useful if EF2800 is being remotely managed). For
information about setting up the host ports, refer to Section 4.1.1,
"FC Host Port Link Speed" on page 57.
• Restart both SM modules. For information about restarting the SM
modules, refer to Section 4.3, "Restarting the SMs" on page 61.
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