IBM SYSTEM STORAGE EXP3000 - INTEROPERABILITY MATRIX..., Installation And User Manual

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Table 5. Troubleshooting information (continued)
Component Problem indicator Possible cause Possible solutions
One or more hard
disk drives
One or more green
LEDs are off
No activity to the
drives
No action is required.
All hard disk
drives
No activity to the
drives
No action is required.
Damaged or loose
SAS cables
Check the SAS-bus cables and connections.
ESM failure Use the system-management software to check the
SAS-bus status. Replace the ESM. See “Replacing
an ESM” on page 24.
Midplane failure Have the EXP3000 serviced.
Front panel Power supply Make sure that the cables are connected and the
power supplies are turned on.
Hardware failure If any other LEDs are lit, have the EXP3000
serviced.
Some or all
components
Intermittent or
sporadic power loss to
the EXP3000
Defective ac or dc
power source or
partially connected
power cable
Check the ac or dc power source. Secure all
installed power cables and power supplies. If
applicable, check the power components (power
supply units, uninterruptible power supply, and so
on). Replace defective power cables.
Power supply
failure
Check for a fault LED on the power supply and
replace the failed power supply. See “Replacing a
hot-swap power supply” on page 26.
Midplane failure Have the EXP3000 serviced.
Drives Unable to access any
drives
SAS cable Make sure that the SAS cables are undamaged and
properly connected. Replace the cable.
ESM failure Have the EXP3000 serviced.
Subsystem Random errors Midplane failure Have the EXP3000 serviced.
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System Storage EXP3000: Installation and User’s Guide