EXP100
ESM
CRU
types,
firmware,
and
release
levels
explained
Understanding
the
information
in
this
section
is
essential
to
completing
an
accurate
EXP100
installation.
ATTENTION:
The
firmware
in
your
new
EXP100
ESM
CRUs
might
not
be
compatible
with
the
firmware
of
your
existing
ESM
module
in
the
EXP100
expansion
enclosure.
You
MUST
ensure
ESM
firmware
compatibility
before
you
replace
any
ESM
CRUs
in
the
EXP100
expansion
enclosure.
Please
refer
to
for
information
on
the
CRU
part
number
and
the
ESM
firmware
level
that
is
compatible
with
your
EXP100
expansion
enclosure.
A
loss
of
data
access
and,
in
some
cases,
a
loss
of
data
will
result
if
an
ESM
with
incompatible
firmware
is
installed
in
the
same
EXP100
expansion
enclosure.
DO
NOT
rely
solely
on
the
CRU
part
number
of
the
installed
ESM
to
determine
the
ESM
firmware
level.
Instead,
use
the
procedure
described
to
determine
the
current
firmware
level
of
the
existing
ESM
in
the
EXP100
expansion
enclosure
and
ensure
that
the
new
replacement
ESM
is
compatible
with
the
installed
ESM.
The
existing
ESM
firmware
might
have
been
previously
updated.
For
more
information
about
the
EXP100
ESM
replacement
procedure,
ESM
firmware
upgrades,
and
problem
troubleshooting,
please
refer
to
the
following
sections
in
this
document:
v
v
v
v
If
you
need
further
assistance,
please
contact
IBM
technical
support,
your
IBM
reseller,
or
IBM
representative
to
find
out
which
EXP100
CRU
is
compatible
with
the
ESM
firmware
of
your
existing
ESM
expansion
enclosure.
EXP100
ESM
CRU
types
There
are
three
types
of
EXP100
ESM
CRUs
-
R1,
R2,
and
R3,
which
are
described
as
follows:
v
R1
refers
to
EXP100
ESMs
that
offer
Limited
High-Availability
(LHA)
support
and
are
only
compatible
with
ESM
firmware
version
953x
and
earlier.
R1
is
no
longer
supported.
v
R2
refers
to
EXP100
ESMs
that
offer
Full
High-Availability
(FHA)
support
and
are
compatible
with
ESM
firmware
version
9554.
v
R3
refers
to
EXP100
ESMs
that
offer
Full
High-Availability
(FHA)
support
and
are
compatible
with
ESM
firmware
version
956x
and
later.
The
current
EXP100
release
is
shipped
with
R3
ESM
firmware,
which
enables
the
support
of
the
new
400
GB
SATA
drive
option
(P/N
39M4570)
400
GB
CRU/FRU
(P/N
39M4575),
and
the
new
250
GB
SATA
drive
CRU/FRU
(P/N
40K6837.
6
IBM
TotalStorage
DS4000
EXP100
Storage
Expansion
Enclosure:
Installation,
User’s
and
Maintenance
Guide
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Summary of Contents for TotalStorage EXP100
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