<s>
Network	B-Protocol
Direct	I-Protocol
Attached	I-Protocol
Storage	I-Protocol
(	O
NDAS	O
)	O
is	O
a	O
proprietary	O
storage	O
area	O
network	O
system	O
,	O
originally	O
marketed	O
by	O
the	O
company	O
Ximeta	O
,	O
for	O
connecting	O
external	O
digital	O
storage	O
devices	O
such	O
as	O
hard-disks	O
,	O
flash	O
memory	O
and	O
tape	O
drives	O
via	O
the	O
Ethernet	O
family	O
of	O
computer	B-Architecture
networks	I-Architecture
.	O
</s>
<s>
Unlike	O
other	O
more	O
common	O
forms	O
of	O
networked	O
storage	O
,	O
NDAS	O
does	O
not	O
use	O
TCP/IP	B-Protocol
to	O
communicate	O
over	O
the	O
network	O
.	O
</s>
<s>
NDAS	O
also	O
supports	O
some	O
limited	O
RAID	B-Architecture
functions	O
such	O
as	O
aggregation	O
and	O
mirroring	O
.	O
</s>
<s>
The	O
following	O
year	O
,	O
IOCELL	O
revived	O
Linux	B-Application
client	O
support	O
for	O
NDAS	O
—	O
which	O
Ximeta	O
had	O
"	O
temporarily	O
suspended	O
"	O
in	O
September	O
2009	O
—	O
by	O
releasing	O
the	O
drivers	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
as	O
the	O
open-source	O
"	O
ndas4linux	O
"	O
project	O
.	O
</s>
<s>
The	O
disk	O
drive	O
can	O
be	O
used	O
via	O
multiple	O
interfaces	O
(	O
typically	O
eSATA	O
,	O
USB	B-Protocol
or	O
Ethernet	O
)	O
though	O
not	O
concurrently	O
:	O
USB	B-Protocol
and	O
eSATA	O
allow	O
access	O
by	O
only	O
one	O
host	O
.	O
</s>
<s>
The	O
LPX	O
Protocol	O
is	O
not	O
routable	O
,	O
thus	O
limiting	O
access	O
to	O
one	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
.	O
</s>
<s>
It	O
uses	O
EtherType	B-Protocol
value	O
0x88AD	O
.	O
</s>
<s>
The	O
devices	O
are	O
usually	O
accompanied	O
with	O
client	O
driver	O
software	O
for	O
Microsoft	B-Application
Windows	I-Application
operating	I-Application
systems	I-Application
.	O
</s>
<s>
Drivers	O
for	O
Linux-based	B-Application
operating	I-Application
systems	I-Application
(	O
Linux	B-Application
distributions	I-Application
such	O
as	O
Fedora	O
,	O
Ubuntu	B-Operating_System
or	O
Debian	O
)	O
were	O
originally	O
available	O
only	O
from	O
the	O
manufacturer	O
.	O
</s>
