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8-18 Troubleshooting AlphaServer 1000A Owner's Guide
Overheating Problems
Internal sensors monitor system and power supply temperature and shut down the
system if maximum limits are exceeded. If the system shuts down unexpectedly:
Ensure that the top cover and side panels are properly in place. Refer to "Top
Cover and Side Panels" in Chapter 5, "Installing and Removing Components" for
information on removing and replacing panels.
Verify that the ambient temperature does not exceed the limits specified in Table
2-1, "Optimal Environmental Conditions."
Refer to Table 8-3, "Power Problems" to troubleshoot power supply problems
and fan failure.
RAID Device Problems
For systems that have the StorageWorks RAID Array 200 Subsystem installed,
Table 8-13 describes symptoms of RAID device problems and offers solutions.
Table 8-13 Troubleshooting RAID Device Problems
Symptom Action
Some RAID devices do not appear on
the
show device
display.
Valid configured RAID logical drives will appear as
DRA0-DRA
n,
not as DK
n.
Configure the drives by
running the RCU, following the instructions in the
StorageWorks RAID Array 200 Subsystem Family
Installation and Configuration Guide,
EK-SWRA2-IG
.
Several physical disks can be grouped as a single logical
DRA
n
device. External SCSI terminators used with the
SWXCR
controller must be of type
12-41667-02
(narrow)
or
12-41667-04
(wide)
.
Drives on the RAID subsystem start up
with the amber fault indicator light on.
Whenever you move drives on or off the RAID
controller, run the RCU to set up the drives and logical
units. Follow the instructions in the installation and
configuration guide.
Cannot access disks connected to the
RAID subsystem on Microsoft
Windows NT systems.
On Microsoft Windows NT systems, while running the
ECU, verify that the controller is set to spin up two disks
every six seconds. This is the default setting if you are
using the default configuration files for the controller.
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