IBM DS4000 EXP810 Installation, User's, And Maintenance Manual page 156

Table 38. Symptom-to-FRU index (continued)
Problem
indicator
Amber LED is
flashing
128
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
Component Possible cause
Drive CRUs Drive identity is in
(Fault LED lit) process
ESM port An FC loop
bypass initialization process
(LIP) is being
generated in the
drive loop due to a
faulty component.
ESM SFP port The enclosure
bypass LED speed was set to 4
Gbps but the SFP
inserted in the ESM
SFP port does not
operate at 4 Gbps.
SFPs are inserted
into unused ESM
ports labeled 2A
and 2B.
Front panel One or multiple
(Global CRUs has
Summary Fault intermittent
LED) problems.
Possible solutions
No corrective action needed.
Use the Read Link Status
window in the DS Storage
Manager Client Subsystem
Management window and the
storage subsystem event logs to
isolate the faulty component.
Use the Recovery Guru menu
function in the DS Storage
Manager Client Subsystem
Management window to verify the
problem and replace the SFP
with a 4 Gbps SFP.
Verify the port connections in the
back of the EXP810 and make
corrections (using port 1A and
1B) if required.
Use the Recovery Guru menu
function in the DS Storage
Manager Client Subsystem
Management window and the
DS4000 storage subsystem
Major Event Log to troubleshoot
the problem.