HP StorageWorks U320e SCSI Host Bus Adapter user guide (AH627-96001, March 2007)

Symptoms
Troubleshooting step s
The host adapter is
recognized, but it does not
detect any of the connected
SCSI devices.
The command dmesg can be used to see what devices are detected on
each SCSI bus.
• Check the SCSI devices and cables (see Investigating the SCSI cables
and devices, p age 31).
• Try put ting the host adapter in a different PCI slot.
• Try updating the firmware on the host adapter as described in Upda ting
firmware.
• If all else fails, replace the SCSI host ad apter.
The compute
rrecognizesthe
host adapte
r, but only detects
connected
SCSI devices on
one of the b
usses. The other
bus report
snodevices.
The command
dmesg can be used to see what devices are detected on
each SCSI bu
s.
• Swap the de
vices and cables from the SCSI bus that appears to be
working wi
th the one having issues. If the issue follows the bus, replace
the SCSI host adapter. If the issue follows the attached SCSI devices,
check the SCSI devices and cables (see Investigating the SCSI cables
and devices, p age 31).
The host adapter is detected
by the operating system, it
detects some of the connected
devicesonbothSCSIbusses,
but does not detect all of the
connected devices.
The command dmesg can be used to see what devices are detected on
each SCSI bus.
• Check the SCSI devices and cables (see Investigating the SCSI cables
and devices, p age 31).
Configuration Tool messages
In the Configuration To ol, you might see an error message informing you of an unexpected error or
incorrect information discovere d by the tool. Using the help text presented with the error message,
correcttheissuebeforeproceeding.
Warnings and error messages are posted in the Status area of the Configuration Tool.
Table 6 Messages from NVRAM tab ac tions.
Error message
Solution
An error occurred loading
NVRAM data.
The first time a channel is highlighted, the tool tries to read NVRAM from
thecard. ThismessageisdisplayedifthesizeoftheNVRAMbufferdoes
notmatchtheexpectedsizeortheNVRAMbuffercouldnotberetrieved.
This message usually indicates that the application could not communicate
with the driver, probably because the application does not support the
driver version in use.
Warning: NVRAM could not
be read, d efaults returned.
ThismessageoccursasaresultofcorruptNVRAM.Whenthedriver
accesses the NVRAM, a continuity check is performed on the NVRAM
to ensure the returned data is valid. If this check fails, the driver returns
a known NVRAM data buffer that represents card defaults. When this
situation occurs, the defaults are presented via the graphical user interface
and the user is informed that the values shown are defaults. These defaults
must be committed to correct the state of the NVRAM
An error occurred updating
the NVRAM.
The driver cannot p ut the new settings on the card; no changes are made
to the card.
Feature bounds checking
WhentheCommitbuttonisclicked,eachNVRAMfeaturemustbevalidated
before being sent to the c ard. If any one of these features is deemed
inappropriate based on the implementation checks, further NVRAM feature
validation checks are stopped and the message is displayed, for example:
Execution Throttle is greater than the maximum allowable value of 256. No
NVRAM configuration changes have been made to your card.
Theexactmessagevariesbasedonthefirst field with an out-of-range value.
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Troubleshooting