Table
18-1
Types
of
maintenance
for
the
power
supply
unit
Configuration
Active/hot
Active/cold
Inactive/hot
Inactive/cold
System
stopped
Building
block
configuration
Supported
(*1) Unsupported
(*2)
Unsupported
Unsupported
(*2)
Supported
(*3)
*1:
Active/hot
replacement
can
be
performed
only
with
a
redundant
configuration.
*2:
If
any
physical
partition
is
currently
operating,
the
crossbar
box
cannot
be
powered
off.
*3:
All
the
physical
partitions
must
be
powered
off,
and
the
system
must
be
completely
shut
down.
Table
18-2
Maintenance
flow
Details
of
update
process
Replacement
1
Preparation
2
Removing
a
power
supply
unit
3
Installing
a
power
supply
unit
4
Restoring
the
system
18.2.2
Maintenance
flow
lists
the
sequence
of
the
maintenance
procedure
for
the
power
supply
units.
18.2.3
Precautions
for
replacement
Note
the
following
points
when
replacing
a
power
supply
unit:
■
There
are
two
power
supply
units.
Thus,
the
system
can
continue
operating
even
if
one
of
the
units
fails.
Do
not,
however,
operate
the
system
for
an
extended
period
while
one
unit
has
failed.
■
When
replacing
multiple
power
supply
units,
replace
one
unit
at
a
time.
If
redundancy
of
the
power
supply
unit
cannot
be
assured,
then
system-stopped
maintenance
must
be
performed.
■
Do
not
force
push
the
power
supply
unit
into
its
slot.
If
excessive
force
is
applied,
other
components
or
the
chassis
may
be
damaged.
18.3
Enabling
the
Removal
of
a
Power
Supply
Unit
This
section
describes
the
preparations
that
must
be
completed
prior
to
the
removal
Chapter
18
Maintaining
the
Power
Supply
Units
of
the
Crossbar
Box
317
Summary of Contents for SPARC M10-4
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