Troubleshooting 5U enclosures 105
Troubleshooting 5U enclosures
The table describes common problems that can occur with your enclosure system, together with possible solutions.
For all of the problems listed in
, the Module Fault LED on the Ops panel will light amber to indicate a
fault. See also
“5U enclosure Ops panel” (page 37)
. All alarms also report via SES.
For information about replacing modules, see
“Module removal and replacement” (page 116)
.
Thermal considerations
NOTE:
Thermal sensors in the 5U enclosure 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 enclosure alarm notification, see
USB CLI port connection
DS Series 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
Fault isolation methodology
DS Series and DS EXP/D3284 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.
Table 22 5U alarm conditions
Status
Severity
PSU alert–loss of DC power from a single PSU
Fault–loss of redundancy
Cooling module fan failure
Fault–loss of redundancy
SBB I/O module detected PSU fault
Fault
PSU removed
Configuration error
Enclosure configuration error (VPD)
Fault–critical
Low temperature warning
Warning
High temperature warning
Warning
Over-temperature alarm
Fault–critical
Under-temperature alarm
Fault–critical
I
2
C bus failure
Fault–loss of redundancy
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