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

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Table 20. Troubleshooting (continued)
Problem
indicator
Component Possible cause Possible solutions
One or more
green LEDs are
off Power supplies Power cable is
disconnected or
switches are turned
off Ensure that the power cables are
connected (ac or dc) and that the
disconnect device (dc only) and
the power-supply switches are
turned on.
Several
components Hardware failure Replace the affected components.
If this does not correct the
problem, replace the controllers.
Contact your IBM
technical-support representative.
The DCS3860 was
not powered-on, or
all SAS cable
connections between
the storage
enclosures and the
DCS3860 storage
system failed. Perform one of the following
actions:
v Power-on the storage system.
v Ensure that the SAS cable
connections between the
storage enclosures and the
DCS3860 storage system are
made.
Front panel Power supply
problem Ensure that the power cables are
connected and that the power
supplies are turned on.
Hardware failure If any other LEDs are lit, replace
the midplane. Contact your IBM
technical-support representative.
All drives Midplane failure Replace the DCS3860. Contact
your IBM technical-support
representative.
The EXP3800
expansion enclosure
is connected to
unsupported storage
system Verify that the expansion
enclosure is connected to a
supported storage system. See
http://www.ibm.com/systems/
storage/disk
Green LED is
flashing slowly
(once every 2
seconds) Drives The DCS3860 was
not powered-on, or
all SAS connections
between the storage
enclosures and the
DCS3860 storage
system have failed. Perform one of the following
actions:
v
Power-on the storage system.
v
Ensure that the SAS
connections between the
storage enclosures and the
DCS3860 storage system are
made.
v
Ensure that all the storage
enclosures in the same channel
pair have the same enclosure
speed setting.
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide