Technical data

5. Disconnect all Fibre Channel devices from the host adapter and reboot the computer.
• If this corre cts the problem, check the Fibre Channel cable, SFPs, or Fibre Channel target devices
as described in “ Fibre Channel device is faulty” on page 26.
• If the computer does not boot, install the host adapter in a different computer.
• If the host adapter works in the new computer, contact HP and report this as a possible
interoperability issue between the host adapter a n d the computer.
Mac OS stops an
ddisplays a flashing question mark
Problem: Wit
h
the Celerity FC host adapter installed, the o perating system stops and displays a fl ashing
question mar
k, indicating that the hardware cannot find an op erating system from which to boot.
To troublesh
oot this
problem, perform the following steps:
1. Boot the com
puter from a CD or some other source.
2. Check the System Preferences field to ensure that the startup disk is defined as Startup disks.
NOTE:
The Celerity FC host adapter does
not support booting from an external Fibre Channel drive.
Server freezes or hangs
Problem: The server freezes or hangs.
To troubles ho ot this problem, disconnect all Fibre Channel devices, and then reboot the computer.
• If the server c ontinues to hang:
1. Remove the nonessential PCI cards to determine if there is a PCI b us conflict.
2. Remove the host adapter and test it in a different model computer.
3. If the p roblem persists with the host adapter, replace it with a n ew host adapter.
• If the server no longer hangs:
1. Verify thecableintegrity:
• Check the cable connections.
• Inspect the SFPs for physical damage.
• Replace the SFPs if necessary.
• Inspect the cable ends for dirt or abrasions, which can affect communication.
2. Boot the server and use the ATTO Connection Tool to:
• Set the connection m o de to PTP.
• Set the data rate to the speed of your target device.
By default, the Celerity FC host adapter autonegotiates these parameters.
• Save the changes and restart the server with the Fibre Channel device attached.
3. Watch the LED indicators on the Fibre Channel devices before, during, and after startup.
•Drive LEDs should flash at startup as the Fibre Channel p ort is scanned.
• If a drive LED remains on when the server freezes, there is a problem with the drive.
ATTO Configuration Tool does not show an online status for a device
Problem: The ATTO Configuration Tool does not show a device status as online.
To troubleshoot this problem, perform the following steps:
1. Check the power and data connections to all devices.
Mac OS X Fibre Channel connectivity to the HP StorageWorks Enterprise Virtual Array storage system
configuration guide
27