–
Improves
performance
in
large
configurations
by
reducing
node
delays
(loop
latency)
–
Drive
isolation
frees
up
bandwidth
to
improve
drive
rebuild
times
The
DS4000
EXP710
is
currently
supported
by
DS4300
Turbo
Option,
DS4400,
and
DS4500
storage
servers
only.
Additional
DS4000
storage
server
support
for
the
DS4000
EXP710
might
be
available
in
the
future.
Contact
your
IBM
reseller
or
representative
for
more
information.
Attention
Before
you
attach
the
DS4000
EXP710
to
a
supported
storage
server,
you
must
verify
that
the
controller
firmware
is
updated
to
firmware
version
6.10.xx.xx
or
later.
This
firmware
is
provided
with
Storage
Manager
9.1
and
must
be
installed
before
attaching
the
DS4000
EXP710.
Storage
Manager
9.1
software
and
the
controller
firmware
version
6.10.xx.xx
can
be
downloaded
from
the
DS4000
support
Web
site:
www.ibm.com/servers/storage/support/disk/
Upgrading
your
DS4000
EXP700s
The
DS4000
EXP700
Models
1RU/1RX
Switched-ESM
Option
Upgrade
Kit
(P/N
25R0166)
is
available
to
upgrade
DS4000
EXP700s
in
existing
configurations
with
ESMs
that
have
the
same
internal
switched
capabilities
as
the
DS4000
EXP710.
The
ESM
upgrade
process
is
described
in
this
document
in
Attention:
Do
not
dispose
of
the
DS4000
EXP700
ESMs
you
replace
with
the
ESMs
in
the
upgrade
kit.
Refer
to
the
separate
instructions
included
with
the
upgrade
kit
for
return
processing
information
for
the
DS4000
EXP700
ESMs
you
are
replacing.
Note:
The
upgrade
option
is
not
available
for
storage
expansion
enclosures
connected
to
FAStT200
or
FAStT500
storage
servers.
Additionally,
the
upgrade
option
cannot
be
used
to
upgrade
DS4000
EXP700
storage
expansion
enclosures
connected
to
DS4000
storage
servers
that
are
configured
with
drive
loops
that
intermix
FAStT
EXP500
and
DS4000
EXP700
storage
expansion
enclosures.
Intermixing
DS4000
EXP700s
with
DS4000
EXP710s
and
other
storage
expansion
enclosures
You
can
connect
multiple
DS4000
EXP700s
or
DS4000
EXP710s
together
to
support
a
large
number
of
disk
drives
on
a
fibre
channel
loop.
You
can
also
intermix
DS4000
EXP700s
and
DS4000
EXP710s
together
in
a
fibre
channel
drive
loop.
However,
when
intermixing
DS4000
EXP700s
and
DS4000
EXP710s
in
a
fibre
channel
drive
loop,
the
DS4000
EXP710s
must
be
grouped
together.
The
minimum
ESM
firmware
requirement
for
intermixing
DS4000
EXP700s
or
DS4000
EXP710s
is
version
9326.
For
more
information,
see
2
IBM
TotalStorage
DS4000
EXP700
and
EXP710
Storage
Expansion
Enclosures:
Installation,
User’s,
and
Maintenance
Guide
Summary of Contents for TotalStorage DS4000 EXP710
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