Dynamic
Host
Configuration
Protocol
(DHCP).
A
protocol
defined
by
the
Internet
Engineering
Task
Force
that
is
used
for
dynamically
assigning
Internet
Protocol
(IP)
addresses
to
computers
in
a
network.
dynamic
random
access
memory
(DRAM).
A
storage
in
which
the
cells
require
repetitive
application
of
control
signals
to
retain
stored
data.
ECC.
See
error
correction
coding
.
EEPROM.
See
electrically
erasable
programmable
read-only
memory
.
EISA.
See
Extended
Industry
Standard
Architecture
.
electrically
erasable
programmable
read-only
memory
(EEPROM).
A
type
of
memory
chip
which
can
retain
its
contents
without
consistent
electrical
power.
Unlike
the
PROM
which
can
be
programmed
only
once,
the
EEPROM
can
be
erased
electrically.
Because
it
can
only
be
reprogrammed
a
limited
number
of
times
before
it
wears
out,
it
is
appropriate
for
storing
small
amounts
of
data
that
are
changed
infrequently.
electrostatic
discharge
(ESD).
The
flow
of
current
that
results
when
objects
that
have
a
static
charge
come
into
close
enough
proximity
to
discharge.
environmental
service
module
(ESM)
canister.
A
component
in
a
storage
expansion
enclosure
that
monitors
the
environmental
condition
of
the
components
in
that
enclosure.
Not
all
storage
subsystems
have
ESM
canisters.
E_port.
See
expansion
port
.
error
correction
coding
(ECC).
A
method
for
encoding
data
so
that
transmission
errors
can
be
detected
and
corrected
by
examining
the
data
on
the
receiving
end.
Most
ECCs
are
characterized
by
the
maximum
number
of
errors
they
can
detect
and
correct.
ESD.
See
electrostatic
discharge
.
ESM
canister.
See
environmental
service
module
canister
.
EXP.
See
storage
expansion
enclosure
.
expansion
port
(E_port).
A
port
that
connects
the
switches
for
two
fabrics.
Extended
Industry
Standard
Architecture
(EISA).
A
bus
standard
for
IBM
compatibles
that
extends
the
Industry
Standard
Architecture
(ISA)
bus
architecture
to
32
bits
and
allows
more
than
one
central
processing
unit
(CPU)
to
share
the
bus.
See
also
Industry
Standard
Architecture
.
fabric.
A
Fibre
Channel
entity
which
interconnects
and
facilitates
logins
of
N_ports
attached
to
it.
The
fabric
is
responsible
for
routing
frames
between
source
and
destination
N_ports
using
address
information
in
the
frame
header.
A
fabric
can
be
as
simple
as
a
point-to-point
channel
between
two
N-ports,
or
as
complex
as
a
frame-routing
switch
that
provides
multiple
and
redundant
internal
pathways
within
the
fabric
between
F_ports.
fabric
port
(F_port).
In
a
fabric,
an
access
point
for
connecting
a
user’s
N_port.
An
F_port
facilitates
N_port
logins
to
the
fabric
from
nodes
connected
to
the
fabric.
An
F_port
is
addressable
by
the
N_port
connected
to
it.
See
also
fabric
.
FAStT
MSJ.
See
FAStT
Management
Suite
Java
.
FAStT
Management
Suite
Java
(FAStT
MSJ).
A
diagnostic
and
configuration
utility
that
can
be
used
on
Linux,
Microsoft
Windows,
and
Novell
NetWare
host
systems.
In
Linux,
it
is
also
used
with
the
QLRemote
agent
to
define
preferred
and
non-preferred
paths
for
logical
drives.
FC.
See
fibre
channel
.
FC-AL.
See
arbitrated
loop
.
feature
enable
identifier.
A
unique
identifier
for
the
storage
subsystem,
which
is
used
in
the
process
of
generating
a
premium
feature
key.
See
also
premium
feature
key
.
fibre
channel
(FC).
A
set
of
standards
for
a
serial
input/output
(I/O)
bus
capable
of
transferring
data
between
two
ports
at
up
to
100
Mbps,
with
standards
proposals
to
go
to
higher
speeds.
FC
supports
point-to-point,
arbitrated
loop,
and
switched
topologies.
Fibre
Channel-Arbitrated
Loop
(FC-AL).
See
arbitrated
loop
.
Fibre
Channel
Protocol
(FCP)
for
small
computer
system
interface
(SCSI).
A
high-level
fibre-channel
mapping
layer
(FC-4)
that
uses
lower-level
fibre-channel
(FC-PH)
services
to
transmit
SCSI
commands,
data,
and
status
information
between
a
SCSI
initiator
and
a
SCSI
target
across
the
FC
link
by
using
FC
frame
and
sequence
formats.
field
replaceable
unit
(FRU).
An
assembly
that
is
replaced
in
its
entirety
when
any
one
of
its
components
fails.
In
some
cases,
a
field
replaceable
unit
might
contain
other
field
replaceable
units.
Contrast
with
customer
replaceable
unit
(CRU)
.
FlashCopy.
A
premium
feature
for
DS4000
that
can
make
an
instantaneous
copy
of
the
data
in
a
volume.
F_port.
See
fabric
port
.
FRU.
See
field
replaceable
unit
.
GBIC.
See
gigabit
interface
converter
gigabit
interface
converter
(GBIC).
A
transceiver
that
performs
serial,
optical-to-electrical,
and
Glossary
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