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

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Table 20. Troubleshooting (continued)
Problem
indicator
Component Possible cause Possible solutions
Amber LED is lit
(continued) storage
controller fault
LED (service
action LED
may also be lit) Unsupported
controller Controller configurations do not
match. Check that host daughter
card and cache memory are the
same in both controllers.
Front panel Fibre Channel
connection
Check that the CRUs are properly
installed. If no amber LEDs are
lit, suspect failure of the SFP
module. Verify the failure using
the Storage Manager Client.
If all Fibre Channel connections
failed, suspect failure of the Fibre
Channel host daughter card.
SAS connection
Check the SAS connection to
verify that the CRUs are properly
installed.
If the SAS port LED is off,
suspect failure of the SAS host
daughter card.
iSCSI connection
Check the iSCSI connection to
verify that the CRUs are properly
installed.
If the iSCSI port LED is off, check
the Ethernet cable or verify the
link speed.
If all the iSCSI port LEDs are off,
suspect failure of the iSCSI host
daughter card.
One of the drive
drawers is not fully
closed Use Storage Manager software to
identify the drive drawer that
was not closed and close that
drawer. Pull the drawer out about
1 inch; then push it back in until
it clicks in place.
Check all drive drawers in the
enclosure to ensure they are fully
closed.
Battery fault Battery unit failure Verify the failure using the
Storage Manager Client and
replace the failed battery.
ESM
Board failure Replace the failed ESM. See
“Replacing components” on page
77 for more information.
Chapter 6. Hardware maintenance
125