<s>
network	B-Protocol
file	I-Protocol
system	I-Protocol
that	O
is	O
based	O
on	O
NFSv4	O
and	O
the	O
Virtual	B-General_Concept
Interface	I-General_Concept
(	O
VI	O
)	O
data	O
transfer	O
mechanism	O
.	O
</s>
<s>
DAFS	B-General_Concept
uses	O
remote	B-General_Concept
direct	I-General_Concept
memory	I-General_Concept
access	I-General_Concept
(	O
RDMA	B-General_Concept
)	O
to	O
perform	O
efficient	O
network	O
access	O
to	O
data	O
in	O
remote	O
files	O
.	O
</s>
<s>
File	B-Application
locking	I-Application
is	O
cached	O
on	O
the	O
client	O
side	O
,	O
eliminating	O
the	O
need	O
to	O
access	O
the	O
file	O
server	O
for	O
subsequent	O
data	O
access	O
.	O
</s>
<s>
The	O
DAFS	B-General_Concept
was	O
initially	O
developed	O
by	O
Network	O
Appliance	O
Inc	O
.	O
An	O
85-member	O
industry	O
association	O
named	O
the	O
DAFS	B-General_Concept
Collaborative	O
was	O
assembled	O
to	O
complete	O
the	O
specification	O
.	O
</s>
<s>
Version	O
1.0	O
of	O
the	O
DAFS	B-General_Concept
application	B-Application
programming	I-Application
interface	I-Application
was	O
completed	O
in	O
2001	O
.	O
</s>
<s>
The	O
same	O
year	O
,	O
a	O
working	O
version	O
of	O
DAFS	B-General_Concept
was	O
demonstrated	O
using	O
the	O
Oracle	B-General_Concept
database	I-General_Concept
.	O
</s>
<s>
DAFS	B-General_Concept
beta	O
version	O
1.0	O
is	O
available	O
from	O
SourceForge	B-Application
under	O
the	O
BSD	B-Operating_System
license	I-Operating_System
.	O
</s>
