unit
fibre-channel
ports.
Shared
access
to
a
storage
unit
fibre-channel
port
might
come
from
host
platforms
that
support
a
combination
of
bus
adapter
types
and
the
operating
systems.
Attaching
a
DS8000
series
to
an
open-systems
host
with
fibre-channel
adapters
You
can
attach
a
DS8000
series
to
an
open-systems
host
with
fibre-channel
adapters.
Fibre
channel
is
a
1
Gbps
or
2
Gbps,
full-duplex,
serial
communications
technology
to
interconnect
I/O
devices
and
host
systems
that
are
separated
by
tens
of
kilometers.
The
IBM
TotalStorage
DS8000
series
supports
SAN
connections
at
1
Gbps
to
4
Gbps
with
2
Gbps
host
bus
adapters.
The
DS8000
series
negotiates
automatically
and
determines
whether
it
is
best
to
run
at
1
Gbps
link
or
2
Gbps
link.
The
IBM
TotalStorage
DS8000
series
detects
and
operates
at
the
higher
link
speed.
Fibre
channel
transfers
information
between
the
sources
and
the
users
of
the
information.
This
information
can
include
commands,
controls,
files,
graphics,
video,
and
sound.
Fibre-channel
connections
are
established
between
fibre-channel
ports
that
reside
in
I/O
devices,
host
systems,
and
the
network
that
interconnects
them.
The
network
consists
of
elements
like
switches,
bridges,
and
repeaters
that
are
used
to
interconnect
the
fibre-channel
ports.
Fibre-channel
(SCSI-FCP)
attached
open-systems
hosts
that
the
storage
unit
supports
You
can
attach
the
DS8000
storage
unit
to
fibre-channel
(SCSI-FCP)
attached
open-systems
hosts.
Each
storage
unit
fibre-channel
adapter
has
four
ports.
Each
port
has
a
unique
worldwide
port
name
(WWPN).
You
can
configure
the
port
to
operate
with
the
SCSI-FCP
upper-layer
protocol.
Shortwave
adapters
and
longwave
adapters
are
available
on
the
storage
unit.
Fibre-channel
adapters
for
SCSI-FCP
support
provide
the
following
configurations:
v
A
maximum
of
64
host
ports
for
DS8100
Model
921
and
a
maximum
of
128
host
ports
for
DS8300
Models
922
and
9A2
v
A
maximum
of
509
host
logins
per
fibre-channel
port
v
A
maximum
of
2000
N-port
logins
per
storage
image
v
Access
to
all
63.7KB
LUNs
per
target
(one
target
per
host
adapter),
depending
on
host
type
v
Either
arbitrated
loop,
switched
fabric,
or
point-to-point
topologies
The
storage
unit
supports
the
following
host
systems
for
shortwave
fibre-channel
attachment
and
longwave
fibre-channel
attachment:
v
IBM
eServer
iSeries
™
servers
that
run
an
IBM
OS/400
®
operating
system
v
IBM
eServer
i5
servers
that
run
an
IBM
i5/OS
™
operating
system
v
IBM
RS/6000
®
,
pSeries
®
,
eServer
p5,
RS/6000
SP
™
,
and
pSeries
SP
server
that
run
an
IBM
AIX
®
operating
system
v
IBM
zSeries
servers
that
run
the
Linux
™
operating
system
v
IBM
zSeries
servers
that
run
the
z/VM
®
operating
system
v
Apple
Macintosh
servers
12
DS8000
User’s
Guide
Содержание TotalStorage DS8000
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