Replacing the drives one at a time, Replacing, Drives – IBM Partner Pavilion DS4100 User Manual
Page 118: Time
b.
You
must
turn
on
the
expansion
units
before
the
storage
server.
The
controllers
might
not
recognize
the
correct
configuration
if
the
drives
are
powered
up
after
the
storage
server.
For
instructions
on
powering
up
the
expansion
units,
see
the
expansion-unit
documentation.
c.
Turn
on
the
power
to
the
storage
server;
then
restart
or
turn
on
the
power
to
the
host.
9.
Turn
on
the
power
to
each
device,
based
on
the
power-on
sequence
in
step
To
turn
on
power
to
the
storage
server,
turn
on
the
power-supply
switches
on
the
back
of
the
storage
server.
You
must
turn
on
both
power-supply
switches
to
take
advantage
of
the
redundant
power
supplies.
10.
Check
the
green
Drive
activity
LED
and
the
amber
Drive
fault
LED
below
the
new
drive
CRUs.
Make
sure
that
the
Drive
activity
LEDs
are
on
and
the
Drive
fault
LEDs
are
off.
Note:
The
Drive
fault
LEDs
might
flash
intermittently
while
the
drives
spin
up.
v
If
the
Drive
activity
LED
is
off,
the
drive
CRU
might
not
be
installed
correctly.
Remove
the
drive
CRU,
wait
30
seconds,
and
then
reinstall
it.
v
If
the
Drive
fault
LED
stays
on
or
the
Drive
activity
LED
stays
off,
the
new
drive
might
be
faulty.
See
the
DS4000
Storage
Manager
client
online
Help
for
problem
determination.
11.
Use
the
DS4000
Storage
Manager
client
to
configure
the
new
drives.
See
the
DS4000
Storage
Manager
client
online
Help
for
detailed
instructions.
12.
Restore
the
data
from
backup
to
all
the
drives.
Replacing
the
drives
one
at
a
time
Use
this
procedure
to
replace
all
the
drives
one
at
a
time.
You
cannot
use
this
procedure
on
RAID
0
logical
drives
(use
the
procedure
in
Note:
If
your
storage
subsystem
has
hot
spares
assigned,
you
might
want
to
unassign
the
hot
spares
while
you
perform
this
procedure.
If
you
do
not,
reconstruction
might
start
on
the
hot
spare
before
you
insert
the
new
drive.
The
data
on
the
new
drive
is
still
rebuilt,
but
the
process
takes
longer
for
each
drive.
Remember
to
reassign
the
hot
spares
when
you
are
finished
with
this
procedure.
To
replace
the
drives
one
at
a
time,
perform
the
following
steps:
1.
Read
the
following
information:
v
particularly
the
paragraphs
that
discuss
the
differences
between
the
two
possible
upgrade
procedures
v
Your
software
documentation
regarding
drive
upgrades
and
installation
v
The
documentation
that
comes
with
the
new
drives
Read
all
precautionary
notes,
kit
instructions,
and
other
information.
Kit
instructions
often
contain
the
most
current
information
regarding
the
drives
and
their
installation,
plus
upgrade
or
servicing
procedures.
Compare
the
kit
instructions
with
this
procedure
to
determine
if
you
need
to
modify
this
procedure.
2.
Use
the
DS4000
Storage
Manager
client
to
check
the
status
of
the
unit.
Correct
any
problems
that
are
reported.
3.
Back
up
the
data
on
the
drives
that
you
are
replacing.
86
IBM
TotalStorage
DS4100
Storage
Server:
Installation,
User’s,
and
Maintenance
Guide