Table
17.
Symptom-to-FRU
index
(continued)
Problem
indicator
Component
Possible
cause
Possible
solutions
All
green
LEDs
are
off
All
CRUs
Subsystem
power
is
off
Check
that
all
storage
expansion
enclosure
power
cables
are
plugged
in
and
the
power
switches
are
on.
If
applicable,
check
that
the
main
circuit
breakers
for
the
rack
are
powered
on.
AC
power
failure
Check
the
main
circuit
breaker
and
ac
outlet.
Power-supply
failure
Replace
the
power
supply.
Midplane
failure
Contact
an
IBM
technical-support
representative
to
service
the
storage
expansion
enclosure.
Amber
LED
is
flashing
Drive
CRUs
Drive
rebuild
or
identity
is
in
process
No
corrective
action
needed.
Amber
Conflict
ID
is
lit
Rear
panel
The
same
enclosure
ID
is
being
shared
by
several
storage
expansion
enclosures.
Using
the
x1
digit
only,
set
the
enclosure
ID
for
each
storage
expansion
enclosure
in
a
drive
loop
to
a
unique
number
00
to
07.
DS4000
EXP710
only:
The
DS4000
EXP710
is
set
up
in
a
configuration
with
incorrect
controller
firmware.
Verify
that
the
controller
firmware
is
at
version
6.10.xx.xx
or
later
One
or
more
green
LEDs
are
on
Drive
CRUs
There
is
no
activity
to
the
drive.
Note:
This
can
indicate
normal
activity.
One
or
more
green
LEDs
are
blinking
slowly
Drive
CRUs
Replace
the
SFP.
One
or
more
green
LEDs
are
off
Power
supply
CRUs
Power
cable
is
unplugged
or
switches
are
turned
off
Make
sure
the
power
cable
is
plugged
in
and
the
switches
are
turned
on.
All
drive
CRUs
Midplane
failure
Replace
the
midplane
(contact
an
IBM
technical-support
representative).
Several
CRUs
Hardware
failure
Replace
the
affected
CRUs.
If
this
does
not
correct
the
problem,
have
the
ESMs
replaced,
followed
by
the
midplane.
Contact
an
IBM
technical-support
representative.
Front
panel
Power-supply
problem
Make
sure
that
the
power
cables
are
plugged
in
and
that
the
power
supplies
are
turned
on.
Hardware
failure
If
any
other
LEDs
are
lit,
replace
the
midplane.
Contact
an
IBM
technical-support
representative.
Chapter
4.
Hardware
maintenance
79
Summary of Contents for TotalStorage DS4000 EXP710
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