Appendix
B.
Cable
configurations
This
appendix
shows
examples
of
cable
configurations
for
the
2104
Model
DS4.
Some
of
the
configurations
are
valid
for
all
the
adapters
that
the
2104
Model
DS4
or
Model
TS4
supports.
Other
configurations
are
valid
only
for
particular
types
of
adapters.
Also
shown
are
configurations
that
are
invalid.
Do
not
use
any
configuration
that
is
shown
as
invalid;
unexpected
results
might
occur.
Valid
configurations
Only
point-to-point
connections
are
allowed
between
the
SCSI
interface
cards
in
a
2104
Model
DS4
and
the
SCSI
adapter
card
or
integrated
SCSI
port
in
a
host
system.
A
2104
Model
DS4
with
only
one
SCSI
interface
card
can
be
attached
to
one
SCSI
adapter
or
integrated
SCSI
port.
A
2104
Model
DS4
with
two
SCSI
interface
cards
can
be
attached
to
two
SCSI
adapters
or
integrated
SCSI
ports.
When
you
use
an
internal
connector
on
the
adapter
card,
do
not
use
the
corresponding
external
connector
to
connect
to
a
2104
Model
DS4.
A
2104
Model
DS4
can
be
configured
to
support
either
a
single
SCSI
bus
or
a
dual
SCSI
bus.
The
setting
of
the
SCSI
bus
split
switch
on
the
card
in
the
2104
Model
DS4
defines
which
configuration
is
to
be
used.
An
RS/6000
or
IBM
Eserver
pSeries
computer
uses
one
of
the
following
SCSI
adapters
to
connect
to
the
2104
Model
DS4:
v
PCI
Dual-Channel
Ultra3
SCSI
adapter
(type
number
4-Y,
feature
code
6203)
This
dual-channel
adapter
has
two
external
SCSI
connectors
and
two
internal
SCSI
connectors.
Each
pair,
consisting
of
one
external
and
one
internal
connector,
is
connected
to
a
separate
SCSI
channel.
v
PCI
4-Channel
Ultra3
SCSI
RAID
Adapter
(type
number
4-X,
feature
code
2498)
This
4-channel
adapter
has
four
external
SCSI
connectors
and
two
internal
SCSI
connectors.
The
Channel
1
and
Channel
2
external
connectors
share
the
same
SCSI
bus
as
the
corresponding
Channel
1
and
Channel
2
internal
connectors.
The
Channel
3
and
Channel
4
external
connectors
have
their
own
non-shared
SCSI
bus.
v
PCI-X
Dual
Channel
Ultra320
SCSI
adapter
(type
number
5702,
feature
code
5712)
This
dual-channel
adapter
has
two
external
SCSI
connectors
and
two
internal
SCSI
connectors.
Each
pair,
consisting
of
one
external
and
one
internal
connector,
is
connected
to
a
separate
SCSI
channel.
v
PCI-X
Dual
Channel
Ultra320
SCSI
RAID
Adapter
(type
number
5703,
feature
code
5703)
This
dual
channel
adapter
has
two
Ultra320
SCSI
busses,
each
with
one
internal
and
one
external
connector.
©
Copyright
IBM
Corp.
2003
35
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