Statement
5:
CAUTION:
The
power
control
button
on
the
device
and
the
power
switch
on
the
power
supply
do
not
turn
off
the
electrical
current
supplied
to
the
device.
The
device
also
might
have
more
than
one
power
cord.
To
remove
all
electrical
current
from
the
device,
ensure
that
all
power
cords
are
disconnected
from
the
power
source.
1
2
Use
the
following
procedure
to
turn
off
power
to
the
DS4400
Storage
Server.
1.
Make
sure
that
all
amber
fault
indicator
lights
on
the
DS4400
Storage
Server
are
off.
If
any
fault
indicator
lights
are
on,
use
the
storage-management
software
to
determine
the
status
of
the
system
components
and
correct
any
problems
before
turning
off
the
power.
For
more
information,
see
“Monitoring
status
through
software”
on
page
27
and
“Checking
the
indicator
lights”
on
page
27.
2.
Perform
any
required
procedures
that
are
indicated
by
the
operating-system
software.
3.
Prepare
the
DS4400
Storage
Server
for
shutdown,
as
follows:
a.
Stop
all
I/O
activity
to
the
DS4400
Storage
Server
and
attached
storage
expansion
enclosures.
Note:
If
a
parity
check
is
in
progress,
it
might
take
a
long
time
for
the
drive
indicator
lights
to
stop
blinking.
b.
Use
the
operating-system
software
to
disconnect
the
DS4400
Storage
Server
logical
drives
from
the
host
before
the
storage
server
is
powered
off.
c.
Make
sure
that
the
fast
write
cache
indicator
light
on
each
DS4400
Storage
Server
front
panel
and
all
drive
active
indicator
lights
on
each
storage
expansion
enclosure
front
panel
are
off
(not
blinking).
Attention:
To
turn
off
all
power
to
the
storage
server,
you
must
turn
off
both
power-supply
switches
and
disconnect
both
power
cords.
Use
the
procedure
in
step
4
for
the
proper
shutdown
sequence.
4.
Turn
off
the
power
to
the
DS4400
Storage
Server
or
turn
off
the
power
to
each
device
using
the
following
shutdown
sequence.
a.
Turn
off
power
to
the
host
before
the
storage
server.
If
the
host
must
stay
powered
on
to
support
an
existing
network,
refer
to
the
operating
system
documentation
for
information
about
disconnecting
the
storage
server
logical
drives
from
the
host
before
the
storage
server
is
powered
off.
b.
Turn
off
power
to
the
storage
server
before
you
turn
off
power
to
the
storage
expansion
enclosures.
Turn
off
both
power
supply
switches
on
the
back
of
the
storage
server.
See
Figure
23
on
page
25.
c.
Turn
off
power
to
other
supporting
devices
(for
example,
management
stations,
Fibre
Channel
switches,
or
Ethernet
switches).
26
IBM
TotalStorage
DS4400
Fibre
Channel
Storage
Server:
User’s
Guide
Summary of Contents for TotalStorage DS4400
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