IBM DCS3860, Installation, User'S, And Maintenance Manual

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Table 20. Troubleshooting (continued)
Problem
indicator
Component Possible cause Possible solutions
Intermittent or
sporadic power
loss to the
storage system Some or all
components Defective power
source or incorrectly
connected power
cable Check the ac or dc power source.
Reseat all installed power cables
and power supplies. If applicable,
check the power components
(power supplies or
uninterruptible power supply).
Replace defective power cables.
Power supply failure Check the fault LED on the
power supply. If the LED is lit,
replace the failed component.
Faulty disconnect
device Check and install a new 30A
rated disconnect device.
Midplane failure Replace the DCS3860. Contact
your IBM technical-support
representative.
Unable to access
drives Drives Incorrect storage
system ID settings Ensure that the SAS cables are
undamaged and correctly
connected. Check the storage
system ID settings.
controller failure Replace one or both controllers.
Contact an IBM technical-support
representative.
Drive failure Replace the failed drive or drives.
SAS cable
1. Ensure that the SAS cables are
undamaged and correctly
connected.
2. Replace the SAS cables.
ESM failure Contact your IBM technical
support representative.
Random errors system Midplane failure Replace the DCS3860. Contact
your IBM technical-support
representative.
Chapter 6. Hardware maintenance
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