The
EXP100
supports
up
to
14
1.5
Gbps
SATA
hard
disk
drives.
These
drives
are
preinstalled
in
drive
trays.
This
drive
and
carrier
assembly
is
called
a
drive
CRU.
The
SATA
drive
CRU
includes
the
drive
tray,
the
SATA
drive,
and
the
hard
disk
drive
(HDD)
interposer
card.
You
install
the
drive
CRUs
in
the
14
drive
bays
on
the
front
of
the
expansion
enclosure.
There
are
no
serviceable
parts
in
a
drive
CRU.
If
it
fails,
it
must
be
replaced
in
its
entirety
(drive,
interposer,
bezel,
and
tray).
Attention:
1.
After
you
remove
a
drive
CRU,
wait
at
least
70
seconds
before
replacing
or
reseating
the
drive
CRU
to
allow
the
drive
to
properly
spin
down.
Failure
to
do
so
may
cause
undesired
events.
2.
Never
hot-swap
a
drive
CRU
when
its
associated
green
Activity
LED
is
flashing.
Hot-swap
a
drive
CRU
only
when
its
associated
amber
Fault
LED
lights
and
is
not
flashing
or
when
the
drive
is
inactive
and
its
associated
green
Activity
LED
lights
and
is
not
flashing.
3.
The
SATA
drive
and
its
HDD
card
are
digitally
signed
together
at
the
factory.
Do
not
swap
drives
and
interposers
between
drive
CRUs.
Do
not
replace
one
SATA
drive
with
another
SATA
drive.
These
actions
will
result
in
a
drive
CRU
that
cannot
be
recognized
by
the
expansion
enclosure
ESM.
4.
The
400
GB
SATA
drive
options
and
CRU
(P/N
39M4575)
and
the
new
250
GB
SATA
CRU
(P/N
40K6837)
require
ESM
firmware
level
956x
or
later.
Recommendation:
IBM
strongly
recommends
that
you
check
and
maintain
the
DS4000
storage
subsystem
controller
firmware
and
EXP100
ESM
firmware
at
the
latest
levels
posted
on
the
IBM
DS4000
storage
subsystem
support
Web
site,
even
if
you
do
not
have
any
400
GB
drive
options
in
your
DS4000
configuration.
This
ensures
compatibility
when
existing
SATA
hard
drives
need
to
be
replaced
with
the
new
drive
options
or
SATA
drive
CRUs.
Note:
If
the
hard
disk
drive
you
want
to
remove
is
not
in
a
failed
or
bypass
state,
always
use
the
Storage
Manager
client
program
either
to
place
the
drive
in
a
failed
state
or
to
place
the
array
that
is
associated
with
the
drive
(or
drives)
in
an
offline
state
before
you
remove
the
drive
from
the
storage
expansion
enclosure.
Fan,
ESM,
and
power
supply
bays
The
locations
of
the
EXP100
hot-swap
fan
bays,
hot-swap
ESM
bays,
and
hot-swap
power
supply
bays
are
shown
in
Hot-swap drive bays
Figure
1.
EXP100
hot-swap
drive
bays
Chapter
1.
Introduction
15
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Summary of Contents for TotalStorage EXP100
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