Removing/Replacing
aPower
Supply
(Primary
and
Redundant)
1
Primary
power
supply
2
Redundant
power
supply
Library
power
is
controlled
at
the
individual
power
supplies
and
at
the
front
panel
of
the
library.
The
switch
on
the
rear
of
each
power
supply
controls
power
for
the
library
(Note:
Power
supplies
remained
powered
ON.).
The
button
on
the
front
of
the
control
module
controls
power
for
all
control
module
and
expansion
module
power
supplies.
A
second
(redundant)
power
supply
helps
ensure
that
your
library
does
not
lose
power
(and
become
inaccessible)
if
the
primary
power
supply
should
happen
to
fail.
The
library
automatically
switches
to
the
redundant
power
supply
if
the
primary
power
supply
fails
for
any
reason.
A
redundant
power
supply
should
be
connected
to
a
different
AC
circuit
from
the
primary
power
supply.
Even
better,
the
redundant
power
supply
should
be
connected
to
a
separate
power
distribution
source.
In
the
event
that
the
primary
power
supply
fails
or
becomes
unstable,
the
redundant
power
supply
will
automatically
power
the
library
as
long
as
it
is
turned
ON.
If
your
library
has
a
redundant
power
supply,
you
can
replace
the
primary
power
supply
without
powering
OFF
the
library.
If
your
library
does
not
have
a
redundant
power
supply
installed,
the
empty
slot
will
be
covered
by
a
metal
plate.
a66ug046
1
2
Figure
11-1.
Power
supplies
in
a
control
module
Chapter
11.
Add,
Remove,
Replace
Procedures
11-3
Summary of Contents for System Storage TS3310
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