IBM System Storage DS3300 Installation, User's, And Maintenance Manual page 117

Table 5. Troubleshooting (continued)
Problem
indicator Component
Intermittent or Some or all
sporadic power components
loss to the storage
subsystem
Unable to access Drives
drives
Random errors Subsystem
Hard disk drive is Several
not visible in the components
Storage Manager
software
Possible cause Possible solutions
Defective ac power Check the ac power source.
source or incorrectly Reseat all installed power cords
connected power and power supplies. If applicable,
cable check the power components
(power-supply units or
uninterruptible power supply).
Replace defective power cords.
Power-supply failure Check the fault LED on the
power supply. If the LED is lit,
replace the failed component.
Midplane failure Replace the DS3300. Contact
your IBM technical-support
representative.
Incorrect storage Make sure that the SAS cables
subsystem ID are undamaged and correctly
settings connected. Check the storage
subsystem ID settings.
RAID controller Replace one or both RAID
failure controllers. Contact an IBM
technical-support representative.
Drive failure Replace the failed drive or drives.
Midplane failure Replace the DS3300. Contact
your IBM technical-support
representative.
Drive failure Replace the failed drive or drives.
SAS cable failed Replace the SAS cable.
RAID controller Replace RAID controller.
failure
Midplane failure Replace the DS3300. Contact
your IBM technical-support
representative.
A drive has an Replace the drive.
interface problem
with the ESM or
controller.
Incorrect firmware Make sure that the DS3300 has
version the correct firmware version. See
"Software and hardware
compatibility and upgrades" on
page 11.
In a dual-controller Replace the failed controller and
storage subsystem, ESM.
one controller has
failed, and in the
drive channel that
originates from the
other (functioning)
controller, an ESM
has failed.
Chapter 6. Solving problems
99