Check cable integrity. Check the cables for solid connections. Make sure the
cables snap securely into place. Inspect cable for kinks or cuts. Be careful not to
touch the ends of the cable. Finger prints can cause malfunction in
communication.
Verify the SFP is not damaged and rated for the Data Rate trying to be achieved.
Also, try reseating the SFP. If this does not work, try replacing the SFP with a
new one.
If multiple Fibre Devices are being attached (switch, multiple Drive Arrays) try
connecting one device at a time, adding devices until the problem occurs. This
will help pinpoint the device or cable causing the problem.
Watch the LED indicators on the Fibre card. They should show when you have a
proper link and the connection speed you have negotiated with the device after
startup. Drive lights should also flash at startup as the Fibre port is scanned.
This may give a clue as to the root cause of the issue.
The system's BIOS scan recognizes the Celerity FC host adapter, but does not
detect any of the connected SCSI devices.
Note: The ATTO Technology banner should appear shortly after rebooting the
computer. If the host adapter's BIOS is set to "enabled" or "scan only", the
connected devices, WWN and negotiated transfer rate for each of the Fibre ports
will also be displayed.
The Celerity host adapter BIOS may have been set to disabled (factory default:
BIOS enabled). Set it back to Enabled (if you need to boot from an external
device connected to the host adapter) or Scan Only.
Verify the Fibre devices are powered on.
Check cable integrity. Check the cables for solid connections. Make sure they
snap into place. Inspect cable for kinks or cuts.
Verify the SFP is not damaged and rated for the Data Rate trying to be achieved.
Also, try reseating the SFP. If this does not work, try replacing the SFP with a
new one.
If multiple Fibre Devices are being attached (switch, multiple Drive Arrays) try
connecting one device at a time, adding devices until the problem occurs. This
will help pinpoint the device or cable causing the problem.
Watch the LED indicators on the Fibre card. They should show when you have a
proper link and the connection speed you have negotiated with the device after
startup. Drive lights should also flash at startup as the Fibre port is scanned.
This may give a clue as to the root cause of the issue.
Try putting the host adapter in a different PCI slot.
Try updating the firmware on the host adapter as described in the "Installation
and Operations" manual.
If all else fails, replace the Celerity host adapter.
The computer's BIOS scan recognizes the Celerity host adapter, but only detects
connected Fibre devices on one of the ports. The other port reports no devices.
Please note that if all devices attached to the Fibre card are reported on one channel
Page 3 of 9
Atto Technology, Inc.
April 9,2007
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