Diagnostic steps, Is the enclosure rear panel fru ok led off, 5 diagnostics led status: rear panel “fru ok – HP MSA 2040 SAN Storage User Manual
Page 54
![background image](/manuals/398949/54/background.png)
54
Troubleshooting
The Number of Reads and Number of Writes outputs show the number of these operations that
have occurred since the statistic was last reset, or since the controller was restarted.
2.
Run the show vdisk-statistics command a second time.
This provides you a specific window of time (the interval between requesting the statistics) to determine
if data is being written to or read from the disk.
3.
If any reads or writes occur during this interval, a host is still reading from or writing to this vdisk.
Continue to stop IOPS from hosts, and repeat
until the Number of Reads and Number of
Writes
statistics are zero.
See the HP MSA 2040 CLI Reference Guide for additional information, at your HP MSA 2040 manuals
page:
Diagnostic steps
This section describes possible reasons and actions to take when an LED indicates a fault condition during
initial system setup. See
for descriptions of all LED statuses.
NOTE:
Once event notification is configured and enabled using the SMU, you can view event logs to
monitor the health of the system and its components using the GUI.
In addition to monitoring LEDs via line-of-sight observation of racked hardware components when
performing diagnostic steps, you can also monitor the health of the system and its components using the
management interfaces. Be mindful of this when reviewing the Actions column in the diagnostics tables,
and when reviewing the step procedures provided in this chapter.
Is the enclosure front panel Fault/Service Required LED amber?
Is the enclosure rear panel FRU OK LED off?
Answer
Possible reasons
Actions
No
System functioning properly.
No action required.
Yes
A fault condition exists/occurred.
If installing an I/O module FRU, the
module has not gone online and likely
failed its self-test.
•
Check the LEDs on the back of the controller enclosure to
narrow the fault to a FRU, connection, or both.
•
Check the event log for specific information regarding the
fault; follow any Recommended Actions.
•
If installing an IOM FRU, try removing and reinstalling the
new IOM, and check the event log for errors.
•
If the above actions do not resolve the fault, isolate the
fault, and contact an authorized service provider for
assistance. Replacement may be necessary.
Table 4
Diagnostics LED status: Front panel “Fault/Service Required”
Answer
Possible reasons
Actions
No
(blinking)
System functioning properly.
System is booting.
No action required.
Wait for system to boot.
Yes
The controller module is not powered
on.
The controller module has failed.
•
Check that the controller module is fully inserted and
latched in place, and that the enclosure is powered on.
•
Check the event log for specific information regarding the
failure.
Table 5
Diagnostics LED status: Rear panel “FRU OK”