Type 8730 (ac power), System reliability considerations, System – IBM BladeCenter T Type 8720 User Manual
Page 49: Reliability, Considerations
(see
the
documentation
that
comes
with
your
blade
server
for
information
about
turning
on
the
blade
server).
Make
sure
that
you
shut
down
the
blade-server
operating
system
before
turning
off
a
blade
server,
to
avoid
damaging
the
hard
disk
drives.
Notes:
1.
Within
two
minutes
after
power
has
been
connected
to
the
BladeCenter
T
unit,
the
management
module
applies
power
to
the
I/O
modules.
2.
If
a
power
failure
occurs,
the
BladeCenter
T
unit
restarts
automatically
when
power
is
restored.
3.
The
blade-server
power
button
turns
on
or
turns
off
the
blade
server
if
local
power
control
has
not
been
disabled
through
the
management
module.
4.
The
blade-server
power
button
turns
on
the
blade
server
only
if
the
green
power
light
on
the
blade
server
is
flashing
slowly.
If
the
light
flashes
rapidly,
the
blade
server
has
not
yet
synchronized
with
the
management
module
and
pressing
the
power
button
will
have
no
effect.
Type
8730
(ac
power)
The
BladeCenter
T
unit
can
support
two
or
four
power
modules.
The
BladeCenter
T
unit
does
not
have
a
power
switch.
To
start
the
BladeCenter
T
Type
8730
(ac
power)
unit,
connect
one
end
of
a
power
cord
into
input
power
connector
1
and
2
on
the
rear
of
the
BladeCenter
T
unit,
and
the
other
end
of
each
power
cord
into
a
220-volt
power
distribution
unit
(PDU)
that
is
connected
into
an
appropriate
electrical
outlet.
There
are
four
IEC320
power
connectors
on
the
rear
of
the
Type
8730
(ac
power)
unit,
marked
1-4
on
the
rear
panel.
Power
is
applied
to
the
respective
power
module
according
to
the
numbering
convention
on
the
rear
panel.
v
Power
connector
1
supplies
power
to
power
module
1
v
Power
connector
2
supplies
power
to
power
module
2
v
Power
connector
3
supplies
power
to
power
module
3
v
Power
connector
4
supplies
power
to
power
module
4
System
reliability
considerations
To
help
ensure
proper
cooling
and
system
reliability,
make
sure
that:
v
Each
of
the
module
bays
on
the
front
and
rear
of
the
BladeCenter
T
unit
has
either
a
module
or
filler
module
installed.
v
Each
of
the
blade
bays
on
the
front
of
the
BladeCenter
T
unit
has
either
a
blade
server
or
filler
blade
installed.
v
Each
of
the
drive
bays
in
a
blade
server
storage
expansion
option
has
either
a
hot-swap
drive
or
a
filler
panel
installed.
v
Each
of
the
PCI
slots
in
a
blade
server
PCI
I/O
expansion
option
has
either
a
PCI
adapter
or
a
PCI
filler
bracket
installed
v
A
removed
hot-swap
module
or
drive
is
replaced
within
1
minute
of
removal.
v
A
removed
hot-swap
blade
is
replaced
within
20
minutes
of
removal.
v
A
failed
blower
is
replaced
as
soon
as
possible,
to
restore
cooling
redundancy.
Chapter
4.
Setting
up
the
BladeCenter
T
hardware
39