IBM System Storage DS3300 Installation, User's, And Maintenance Manual page 116

Table 5. Troubleshooting (continued)
Problem
indicator
One or more
green LEDs are
off
Green LED is
flashing slowly
(once every 2
seconds)
98
System Storage DS3300 Storage Subsystem: Installation, User's, and Maintenance Guide
Component Possible cause
Power supplies Power cable is
disconnected or
switches are turned
off
All drives Midplane failure
Several Hardware failure
components
The DS3300 was
not powered-on, or
all SAS cable
connections
between the storage
expansion
enclosures and the
DS3300 storage
subsystem failed.
Front panel Power supply
problem
Hardware failure
Drives The DS3300 was
not powered-on, or
all SAS connections
between the storage
expansion
enclosures and the
DS3300 storage
subsystem have
failed.
Possible solutions
Make sure that the power cord is
connected and that the switches
are turned on.
Replace the DS3300. Contact
your IBM technical-support
representative.
Replace the affected
components. If this does not
correct the problem, replace the
RAID controllers. Contact your
IBM technical-support
representative.
Perform one of the following
actions:
v Power-on the storage
subsystem.
v Make sure that the SAS cable
connections between the
storage expansion enclosures
and the DS3300 storage
subsystem are made.
Make sure that the power cables
are connected and that the power
supplies are turned on.
If any other LEDs are lit, replace
the midplane. Contact your IBM
technical-support representative.
Perform one of the following
actions:
v Power-on the storage
subsystem.
v Make sure that the SAS
connections between the
storage expansion enclosures
and the DS3300 storage
subsystem are made.
v Make sure that all the storage
expansion enclosures in the
same channel pair have the
same enclosure speed setting.