Isolating Faults - HP StorageWorks 2100 - Disk System User Manual

30 HP StorageWorks Disk System 2100 / 2110

Isolating Faults

Table 7 lists the probable causes and solutions for problems you may detect on the
disk system. When more than one problem describes your situation, investigate the
first solution that applies. The table lists the most basic problems first and excludes
them from subsequent problem descriptions.
Erratic LED behavior on the disk system could be observed in the following
situations:
An example of this LED behavior is the LEDs staying lit solidly. This condition is
caused by the disk system being deprived of term power when the server loses power
or is powered down. The disk system does not provide its own term power. It relies on
the host bus adapter to which it is connected for term power.
Troubleshooting Table
TABLE 7
When a server that is connected to a Disk System 2110 is powered down or loses
power (and the disk system remains powered on)
When the disk system is powered up when connected to a downed server
When an unconnected disk system is powered up
Problem LED
Description State
Disk system System
fails to power power LED
on when is off
installed
System
power LED
is blinking
Operating Disk
system module
reports LED is on
errors on a solid or off
device
Probable Cause
Power cord is not plugged in.
The power button is not
pressed.
AC breaker is tripped or AC
power source has failed.
The PDU/PDRU is defective.
Enclosure chassis is faulty.
Power supply is defective.
Cooling fans are not spinning
at the correct speed.
Use diagnostic utilities to
determine disk status.
Solution
Plug in the power
cord.
Press the power
button.
Confirm AC power
availability.
Replace the PDU/
PDRU.
Replace the enclosure
chassis.
Replace the enclosure
chassis.
Replace the enclosure
chassis.
Depending on the
results, monitor or
replace disk module.