Storage server speed settings, Configuring the storage subsystem, Storage subsystem management methods – IBM Partner Pavilion DS4100 User Manual
Page 66: Host-agent (in-band) management method, Storage, Server, Speed, Settings, Configuring, Subsystem
valid
for
the
drive
loop.
The
amber
Conflict
LED
(located
on
the
right-side
of
the
switch)
will
be
lit
if
another
unit
in
the
drive
loop
has
the
same
ID
setting
as
the
server
ID.
Attention:
When
connecting
the
DS4100
to
DS4000
EXP100
storage
expansion
units,
DO
NOT
use
the
tens
digit
(x10)
setting.
Use
only
the
ones
digit
(x1)
setting
to
set
unique
server
IDs
or
enclosure
IDs.
Give
each
drive
expansion
enclosure
in
a
redundant
drive
loop
a
unique
ones
digit
(x1)
ID.
This
setting
will
enforce
hard
AL_PAs
(unchangeable
between
fibre
channel
Loop
Initializations
[LIPs])
for
the
drives
and
facilitate
drive
loop
problem
troubleshooting
in
the
event
of
an
error.
If
the
ones
digits
are
not
unique,
two
or
more
devices
will
have
the
same
hard
AL_PA.
In
such
a
case,
the
controller
will
use
soft
AL_PAs
for
the
devices
that
have
identical
hard
AL_PAs.
The
problem
with
soft
addressing
is
that
addresses
may
change
between
LIPs.
This
possibility
increases
the
difficulty
of
troubleshooting
drive
loop
problems,
since
one
cannot
easily
ascertain
whether
the
same
device
with
a
different
address
or
different
device
may
be
causing
a
problem.
Storage
server
speed
settings
The
default
switch
setting
is
2
Gbps.
This
is
the
only
speed
setting
allowed
for
the
DS4100.
Attention:
Do
not
remove
the
metal
plate
that
covers
the
storage
server
speed
setting.
Do
not
adjust
the
storage
server
speed
setting.
Configuring
the
storage
subsystem
You
must
configure
the
storage
subsystem
configuration
after
you
install
the
storage
server
in
a
rack
cabinet.
Use
the
information
in
the
following
sections
to
configure
your
storage
subsystem
configuration.
Storage
subsystem
management
methods
Before
you
configure
the
storage
subsystem,
determine
which
method
of
storage
subsystem
management
you
want
to
use.
You
can
manage
the
storage
subsystems
in
either
of
two
ways:
host-agent
(in-band)
management
or
direct
(out-of-band)
management.
Important:
If
the
operating
system
of
the
host
server
that
the
storage
subsystem
logical
drive(s)
is
mapped
to
is
not
Microsoft
®
Windows
NT
®
,
you
have
to
make
a
direct
(out-of-band)
management
connection
to
the
storage
subsystem
to
set
the
correct
host
type
first.
Then,
the
server
will
be
able
to
recognize
the
storage
subsystem
correctly
for
host-agent
(in-band)
management.
Host-agent
(in-band)
management
method
This
method
requires
host-agent
software
that
you
install
on
the
host
server.
The
host-agent
software
allows
the
DS4000
Storage
Manager
client
program
to
manage
the
DS4000
storage
subsystem
using
the
same
fibre
channel
connections
between
the
host
server
and
the
storage
subsystem.
You
must
install
at
least
one
management
station
and
a
software
agent
host.
The
management
station
can
be
the
host
or
a
workstation
on
the
Ethernet
network.
A
management
station
will
have
the
client
software
installed.
shows
the
host-agent
(in-band)
management
method.
34
IBM
TotalStorage
DS4100
Storage
Server:
Installation,
User’s,
and
Maintenance
Guide