<s>
A	O
LAN-free	B-General_Concept
backup	I-General_Concept
is	O
a	O
backup	B-Protocol
of	O
server	O
data	O
to	O
a	O
shared	O
,	O
central	O
storage	B-Application
device	I-Application
without	O
sending	O
the	O
data	O
over	O
the	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
(	O
LAN	B-General_Concept
)	O
.	O
</s>
<s>
Note	O
that	O
trivial	O
backup	B-Protocol
to	O
a	O
dedicated	O
,	O
unshared	O
storage	B-Application
device	I-Application
(	O
such	O
as	O
local	O
tape	O
drive	O
)	O
does	O
not	O
meet	O
the	O
definition	O
.	O
</s>
<s>
The	O
goal	O
of	O
LAN-free	B-General_Concept
backup	I-General_Concept
is	O
to	O
reduce	O
the	O
load	O
on	O
LAN	B-General_Concept
and	O
reduce	O
the	O
time	O
it	O
takes	O
to	O
complete	O
the	O
backup	B-Protocol
.	O
</s>
<s>
with	O
backup	B-Protocol
server	O
:	O
in	O
addition	O
to	O
a	O
shared	O
storage	B-Application
device	I-Application
(	O
usually	O
a	O
traditional	O
tape	B-Device
library	I-Device
)	O
,	O
there	O
exists	O
a	O
central	O
server	O
arbitrating	O
access	O
to	O
device	O
(	O
for	O
all	O
the	O
other	O
SAN	O
servers	O
)	O
.	O
</s>
<s>
without	O
backup	B-Protocol
server	O
:	O
the	O
storage	O
facility	O
(	O
usually	O
a	O
virtual	B-Device
tape	I-Device
library	I-Device
,	O
or	O
VTL	O
)	O
is	O
smart	O
enough	O
to	O
handle	O
multiple	O
data	O
accesses	O
without	O
intermediate	O
component	O
.	O
</s>
