<s>
In	O
computing	O
,	O
a	O
distributed	B-Protocol
file	I-Protocol
system	I-Protocol
(	O
DFS	B-Protocol
)	O
or	O
network	B-Protocol
file	I-Protocol
system	I-Protocol
is	O
any	O
file	B-Application
system	I-Application
that	O
allows	O
access	O
to	O
files	B-Operating_System
from	O
multiple	O
hosts	O
sharing	B-General_Concept
via	O
a	O
computer	B-Architecture
network	I-Architecture
.	O
</s>
<s>
This	O
makes	O
it	O
possible	O
for	O
multiple	O
users	O
on	O
multiple	O
machines	O
to	O
share	O
files	B-Operating_System
and	O
storage	O
resources	O
.	O
</s>
<s>
Distributed	B-Protocol
file	I-Protocol
systems	I-Protocol
differ	O
in	O
their	O
performance	O
,	O
mutability	O
of	O
content	O
,	O
handling	O
of	O
concurrent	O
writes	O
,	O
handling	O
of	O
permanent	O
or	O
temporary	O
loss	O
of	O
nodes	O
or	O
storage	O
,	O
and	O
their	O
policy	O
of	O
storing	O
content	O
.	O
</s>
<s>
Client	O
Written	O
in	O
License	O
Access	O
APIBeeGFS	O
C	B-Language
/	O
C++	O
FRAUNHOFER	O
FS	O
(	O
FhGFS	B-Application
)	O
EULA	O
,	O
</s>
<s>
Some	O
researchers	O
have	O
made	O
a	O
functional	O
and	O
experimental	O
analysis	O
of	O
several	O
distributed	B-Protocol
file	I-Protocol
systems	I-Protocol
including	O
HDFS	O
,	O
Ceph	B-Operating_System
,	O
Gluster	O
,	O
Lustre	B-Application
and	O
old	O
(	O
1.6.x	O
)	O
version	O
of	O
MooseFS	B-Application
,	O
although	O
this	O
document	O
is	O
from	O
2013	O
and	O
a	O
lot	O
of	O
information	O
are	O
outdated	O
(	O
e.g.	O
</s>
<s>
MooseFS	B-Application
had	O
no	O
HA	O
for	O
Metadata	O
Server	O
at	O
that	O
time	O
)	O
.	O
</s>
