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O
operating
system
(OS).
A
collection
of
system
programs
that
control
the
overall
operation
of
a
computer
system.
ordered
set.
A
transmission
word
that
uses
8b/10b
mapping
and
begins
with
the
K28.5
character.
Ordered
sets
occur
outside
of
frames,
and
include
frame
delimiters,
primitive
signals,
and
primitive
sequences.
Ordered
sets
are
used
to
differentiate
Fibre
Channel
control
information
from
data
frames
and
to
manage
the
transport
of
frames.
See
also
frame
delimiter
,
primitive
signal
,
and
primitive
sequence.
OS.
See
operating
system
.
P
packet.
A
set
of
information
transmitted
across
a
network.
See
also
frame
.
participating
mode.
A
mode
in
which
a
loop
port
(L_port)
in
a
loop
has
a
valid
arbitrated
loop
physical
address
(AL_PA)
and
can
arbitrate,
send
frames,
and
retransmit
received
transmissions.
See
also
nonparticipating
mode
.
path
selection.
The
selection
of
a
transmission
path
through
the
fabric.
Switches
use
the
Fibre
Channel
shortest
path
first
(FSPF)
protocol.
PCI.
Peripheral
control
interconnect.
PDU.
Power
distribution
unit.
Performance
Monitoring.
A
feature
that
provides
error
and
performance
information
to
the
administrator
and
user
for
use
in
storage
management.
phantom
address.
An
arbitrated
loop
physical
address
(AL_PA)
value
that
is
assigned
to
a
device
that
is
not
physically
in
the
loop.
Also
known
as
phantom
AL_PA.
phantom
device.
A
device
that
is
not
physically
in
an
arbitrated
loop,
but
is
logically
included
through
the
use
of
a
phantom
address.
PLDA.
See
private
loop
direct
attach
.
PLOGI.
See
port
login
.
PMC.
PCI
mezzanine
card.
P/N.
Part
number.
point-to-point.
A
Fibre
Channel
topology
that
employs
direct
links
between
each
pair
of
communicating
entities.
See
also
topology
.
port
cage.
The
metal
casing
extending
out
of
the
optical
port
on
the
switch,
and
in
which
the
gigabit
interface
converter
(GBIC)
or
small
form-factor
pluggable
(SFP)
can
be
inserted.
port
card.
A
Fibre
Channel
card
that
contains
optical
or
copper
port
interfaces,
and
acts
like
a
switch
module.
See
also
16-port
card
.
port
login
(PLOGI).
The
port-to-port
login
process
by
which
initiators
establish
sessions
with
targets.
See
also
fabric
login
.
port
module.
A
collection
of
ports
in
a
switch.
port_name.
The
unique
identifier
assigned
to
a
Fibre
Channel
port.
Communicated
during
login
and
port
discovery.
POST.
See
power-on
self-test
.
power-on
self-test
(POST).
A
series
of
diagnostics
that
are
automatically
run
by
a
device
when
the
power
is
turned
on.
primary
FCS
switch.
Primary
fabric
configuration
server
switch.
The
switch
that
actively
manages
the
configuration
and
security
parameters
for
all
switches
in
the
fabric.
See
also
backup
FCS
switch
and
FCS
switch
.
primitive
sequence.
A
part
of
an
ordered
set
that
indicates
or
initiates
port
states.
See
also
ordered
set
.
primitive
signal.
A
part
of
an
ordered
set
that
indicates
events.
See
also
ordered
set
.
principal
switch.
The
switch
that
assumes
the
responsibility
to
assign
domain
IDs.
The
role
of
principal
switch
is
negotiated
after
a
“build
fabric”
event.
private
device.
A
device
that
supports
arbitrated
loop
protocol
and
can
interpret
8-bit
addresses,
but
cannot
log
into
the
fabric.
private
loop.
An
arbitrated
loop
that
does
not
include
a
participating
fabric
loop
port
(FL_port).
private
loop
direct
attach
(PLDA).
A
subset
of
fibre
channel
standards
for
the
operation
of
peripheral
devices.
private
NL_port.
A
node
loop
port
(NL_port)
that
communicates
only
with
other
private
NL_ports
in
the
same
loop
and
does
not
log
into
the
fabric.
protocol.
A
defined
method
and
a
set
of
standards
for
communication.
public
device.
A
device
that
supports
arbitrated
loop
protocol,
can
interpret
8-bit
addresses,
and
can
log
into
the
fabric.
public
loop.
An
arbitrated
loop
that
includes
a
participating
fabric
loop
port
(FL_port),
and
can
contain
both
public
and
private
node
loop
ports
(NL_ports).
114
IBM
TotalStorage
SAN
Switch:
2109
Model
M12
Installation
and
Service
Guide
Summary of Contents for TotalStorage 2109 M12
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