Troubleshoot/Problem Solving 135
Thermal Considerations
Thermal sensors in the 5U chassis and its components monitor the thermal health of the storage
system.
• Exceeding the limits of critical values will activate the over-temperature alarm.
• For information about 5U chassis alarm notification, see Table 28 .
USB CLI Port Connection
The QXS-G2-412, QXS-G2-424, and QXS-G2-484 controllers feature a CLI port employing a mini-USB
Type B form factor. If you encounter problems communicating with the port after cabling your
computer to the USB device, you may need to either download a device driver (Windows), or set
appropriate parameters via an operating system command (Linux). See USB Device Connection on
page 225 for more information.
Fault Isolation methodology
The QXS-G2-412, QXS-G2-424, and QXS-G2-484 storage systems provide many ways to isolate faults.
This section presents the basic methodology used to locate faults within a storage system, and to
identify the pertinent CRUs affected.
As noted in Accessing Disk Management Utility (GUI) on page 112, use the disk management utility
(GUI) to configure and provision the system upon completing the hardware installation.
• As part of this process, configure and enable event notification so the system will notify you when
a problem occurs that is at or above the configured severity (see the Configuring event
notification topic within the
QXS G2 Disk Management Utility User Guide
).
• With event notification configured and enabled, you can follow the recommended actions in the
notification message to resolve the problem, as further discussed in the options presented below.
Basic Steps
Follow these basic steps:
• Gather fault information, including using system LEDs as described in Gather Fault Information on
page 137.
Ops panel communication error (I
2
C)
Fault–critical
RAID error Fault–critical
SBB I/O module fault Fault–critical
SBB I/O module removed Warning
Drive power control fault Warning–no loss of drive power
Drive power control fault Fault–critical: loss of drive power
Insufficient power available Warning
Ta b l e 2 8 5U Alarm Conditions
Status Severity
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