DMTF
See
Distributed
Management
Task
Force
.
domain
name
server
In
the
Internet
suite
of
protocols,
a
server
program
that
supplies
name-to-address
conversion
by
mapping
domain
names
to
IP
addresses.
DRAM
See
dynamic
random
access
memory
.
DWDM
See
dense
wavelength
division
multiplexing
.
dynamic
random
access
memory
(DRAM)
A
storage
in
which
the
cells
require
repetitive
application
of
control
signals
to
retain
stored
data.
E
EC
See
engineering
change.
EIA
See
Electronic
Industries
Alliance
.
Electronic
Industries
Alliance
(EIA)
An
alliance
of
four
trade
associations:
The
Electronic
Components,
Assemblies
&
Materials
Association
(ECA);
the
Government
Electronics
and
Information
Technology
Association
(GEIA);
the
JEDEC
Solid
State
Technology
Association
(JEDEC);
and
the
Telecommunications
Industry
Association
(TIA).
Prior
to
1998,
EIA
was
the
Electronic
Industries
Association
and
the
group
dates
back
to
1924.
empty
In
a
Global
Mirror
relationship,
a
status
condition
that
exists
when
the
consistency
group
contains
no
relationships.
engineering
change
(EC)
A
correction
for
a
defect
of
hardware
or
software
that
is
applied
to
a
product.
error
code
A
value
that
identifies
an
error
condition.
ESS
See
IBM
TotalStorage
®
Enterprise
Storage
Server
®
.
exclude
To
remove
a
managed
disk
(MDisk)
from
a
cluster
because
of
certain
error
conditions.
excluded
In
SAN
Volume
Controller,
the
status
of
a
managed
disk
that
the
cluster
has
removed
from
use
after
repeated
access
errors.
extent
A
unit
of
data
that
manages
the
mapping
of
data
between
managed
disks
and
virtual
disks.
F
fabric
In
fibre-channel
technology,
a
routing
structure,
such
as
a
switch,
that
receives
addressed
information
and
routes
it
to
the
appropriate
destination.
A
fabric
can
consist
of
more
than
one
switch.
When
multiple
fibre-channel
switches
are
interconnected,
they
are
described
as
cascading.
See
also
cascading
.
168
IBM
System
Storage
SAN
Volume
Controller:
Hardware
Installation
Guide
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