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Table
42
describes
the
storage
server
indicator
lights.
Table
42.
DS4500
storage
server
indicator
lights
Indicator
light
Color
Normal
operation
Problem
indicator
Possible
conditions
suggested
by
the
problem
indicator
1
Power
Green
On
Off
v
No
power
to
DS4500
storage
server
v
No
power
to
storage
subsystem
v
Cables
are
loose
or
the
switches
are
off
v
Power
supply
failed,
is
missing,
or
is
not
fully
seated
in
DS4500
storage
server
v
Overtemperature
condition
Power
supply
fault
Amber
Off
On
v
Power
supply
failed
or
if
the
Power
supply
is
turned
off,
disconnected,
or
not
fully
seated
in
DS4500
storage
server
v
Overtemperature
v
No
power
to
DS4500
storage
server
or
storage
subsystem
(all
indicator
lights
are
off)
Storage
server
fan
fault
Amber
Off
On
v
Storage
server
fan
failed
v
Fan
and
communications
module
is
missing,
unplugged,
or
failed
v
Circuitry
failure
v
Overtemperature
condition
Controller
fault
Amber
Off
On
Controller
failed;
one
or
more
memory
modules
failed
(SIMMs
or
DIMMs)
Fast
write
cache
Green
Steady
or
blinking
2
Software
dependent
1
Normal
operation
is
off
if:
v
Cache
is
not
enabled
v
Battery
is
not
ready
1
Always
use
the
storage
management
software
to
identify
the
failure.
2
The
fast
write
cache
indicator
light
is
on
when
there
is
data
in
the
cache
and
it
blinks
during
a
fast
write
operation.
TotalStorage
Power
Green light indicates power is on.
Normal status: On
Problem status: Off
Power supply
Amber light indicates a power supply fault.
Normal status: Off
Problem status: On
Fan
Amber light indicates a fan fault.
Normal status: Off
Problem status: On
Controller
Amber light indicates a controller fault.
Normal status: Off
Problem status: On
Fast Write Cache
Green light indicates data in cache.
Figure
63.
DS4500
storage
server
indicator
lights
Chapter
11.
Type
1742
DS4500
Storage
Server
95
Summary of Contents for System Storage DS4000
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