<s>
Bare-metal	B-General_Concept
restore	I-General_Concept
is	O
a	O
technique	O
in	O
the	O
field	O
of	O
data	O
recovery	O
and	O
restoration	O
where	O
the	O
backed	B-Protocol
up	I-Protocol
data	O
is	O
available	O
in	O
a	O
form	O
that	O
allows	O
one	O
to	O
restore	O
a	O
computer	O
system	O
from	O
"	O
bare	O
metal	O
"	O
,	O
i.e.	O
</s>
<s>
without	O
any	O
requirements	O
as	O
to	O
previously	O
installed	O
software	O
or	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Typically	O
,	O
the	O
backed	B-Protocol
up	I-Protocol
data	O
includes	O
the	O
necessary	O
operating	B-General_Concept
system	I-General_Concept
,	O
applications	B-Application
and	O
data	O
components	O
to	O
rebuild	O
or	O
restore	O
the	O
backed	B-Protocol
up	I-Protocol
system	O
to	O
an	O
entirely	O
separate	O
piece	O
of	O
hardware	O
.	O
</s>
<s>
In	O
some	O
configurations	O
,	O
the	O
hardware	O
receiving	O
the	O
restore	O
needs	O
to	O
have	O
an	O
identical	O
configuration	O
to	O
the	O
hardware	O
that	O
was	O
the	O
source	O
of	O
the	O
backup	B-Protocol
,	O
although	O
virtualization	B-General_Concept
techniques	O
and	O
careful	O
planning	O
can	O
enable	O
a	O
bare-metal	B-General_Concept
restore	I-General_Concept
to	O
a	O
hardware	O
configuration	O
different	O
from	O
the	O
original	O
.	O
</s>
<s>
Disk	B-Application
imaging	I-Application
applications	B-Application
enable	O
bare-metal	B-General_Concept
restores	I-General_Concept
by	O
storing	O
copies	O
(	O
images	O
)	O
of	O
the	O
entire	O
contents	O
of	O
hard	O
disks	O
to	O
networked	O
or	O
other	O
external	O
storage	O
,	O
and	O
then	O
writing	O
those	O
images	O
to	O
other	O
physical	O
disks	O
.	O
</s>
<s>
The	O
disk	B-Application
image	I-Application
application	O
itself	O
can	O
include	O
an	O
entire	O
operating	B-General_Concept
system	I-General_Concept
,	O
bootable	O
from	O
a	O
live	O
CD	O
or	O
network	O
file	O
server	O
,	O
which	O
contains	O
all	O
the	O
required	O
application	O
code	O
to	O
create	O
and	O
restore	O
the	O
disk	B-Application
images	I-Application
.	O
</s>
<s>
The	O
dd	B-Application
utility	O
on	O
a	O
Linux	B-Application
boot	O
CD	O
can	O
be	O
used	O
to	O
copy	O
file	B-Application
systems	I-Application
between	O
disk	B-Application
images	I-Application
and	O
disk	B-Application
partitions	I-Application
to	O
effect	O
a	O
bare-metal	B-General_Concept
backup	I-General_Concept
and	O
recovery	O
.	O
</s>
<s>
These	O
disk	B-Application
images	I-Application
can	O
then	O
be	O
used	O
as	O
input	O
to	O
a	O
new	O
partition	B-Application
of	O
the	O
same	O
type	O
but	O
equal	O
or	O
larger	O
size	O
,	O
or	O
alternatively	O
a	O
variety	O
of	O
virtualization	B-General_Concept
technologies	I-General_Concept
as	O
they	O
often	O
represent	O
a	O
more	O
accessible	O
but	O
less	O
efficient	O
representation	O
of	O
the	O
data	O
on	O
the	O
original	O
partition	B-Application
.	O
</s>
<s>
The	O
IBM	O
VM/370	B-Application
operating	B-General_Concept
system	I-General_Concept
provides	O
a	O
command	O
by	O
the	O
name	O
of	O
"	O
ddr	O
,	O
"	O
for	O
disk	O
dump	O
and	O
restore	O
.	O
</s>
<s>
It	O
is	O
a	O
bit	O
by	O
bit	O
backup	B-Protocol
of	O
a	O
hard	O
drive	O
to	O
a	O
specified	O
media	O
,	O
typically	O
tape	O
,	O
but	O
many	O
choices	O
exist	O
.	O
</s>
<s>
Microsoft	O
introduced	O
a	O
new	O
backup	B-Protocol
utility	O
(	O
Wbadmin	O
)	O
into	O
Windows	B-Device
Server	I-Device
2008	I-Device
family	O
of	O
operating	B-General_Concept
system	I-General_Concept
in	O
2008	O
which	O
has	O
built-in	O
support	O
for	O
bare-metal	O
recovery	O
.	O
</s>
<s>
Microsoft	O
updated	O
the	O
Windows	O
Recovery	O
Environment	O
features	O
in	O
the	O
Windows	B-Application
8	I-Application
family	O
of	O
operating	B-General_Concept
system	I-General_Concept
to	O
be	O
set	O
up	O
to	O
provide	O
built-in	O
support	O
for	O
bare-metal	O
recovery	O
.	O
</s>
<s>
Bare-metal	B-General_Concept
restore	I-General_Concept
differs	O
from	O
local	O
disk	B-Application
image	I-Application
restore	O
where	O
a	O
copy	O
of	O
the	O
disk	B-Application
image	I-Application
,	O
and	O
the	O
restoration	O
software	O
,	O
are	O
stored	O
on	O
the	O
computer	O
that	O
is	O
backed	B-Protocol
up	I-Protocol
.	O
</s>
<s>
Bare-metal	B-General_Concept
restore	I-General_Concept
differs	O
from	O
simple	O
data	B-Protocol
backups	I-Protocol
where	O
application	O
data	O
,	O
but	O
neither	O
the	O
applications	B-Application
nor	O
the	O
operating	B-General_Concept
system	I-General_Concept
are	O
backed	B-Protocol
up	I-Protocol
or	O
restored	O
as	O
a	O
unit	O
.	O
</s>
