<s>
The	O
Advanced	B-Application
Maryland	I-Application
Automatic	I-Application
Network	I-Application
Disk	I-Application
Archiver	I-Application
(	O
Amanda	B-Application
)	O
is	O
an	O
open	O
source	O
computer	O
archiving	O
tool	O
that	O
is	O
able	O
to	O
back	O
up	O
data	O
residing	O
on	O
multiple	O
computers	O
on	O
a	O
network	B-Architecture
.	O
</s>
<s>
It	O
uses	O
a	O
client	B-Operating_System
–	I-Operating_System
server	I-Operating_System
model	I-Operating_System
,	O
where	O
the	O
server	O
contacts	O
each	O
client	O
to	O
perform	O
a	O
backup	B-Application
at	O
a	O
scheduled	O
time	O
.	O
</s>
<s>
Amanda	B-Application
was	O
initially	O
developed	O
at	O
the	O
University	O
of	O
Maryland	O
and	O
is	O
released	O
under	O
a	O
BSD-style	B-Operating_System
license	I-Operating_System
.	O
</s>
<s>
Amanda	B-Application
is	O
available	O
both	O
as	O
a	O
free	O
community	O
edition	O
and	O
fully	O
supported	O
enterprise	O
edition	O
.	O
</s>
<s>
Amanda	B-Application
runs	O
on	O
almost	O
any	O
Unix	B-Application
or	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Amanda	B-Application
supports	O
Windows	O
systems	O
using	O
Samba	B-Language
or	O
a	O
native	O
Win32	O
client	O
with	O
support	O
for	O
open	O
files	O
.	O
</s>
<s>
Amanda	B-Application
supports	O
both	O
tape-based	O
and	O
disk-based	O
backup	B-Application
,	O
and	O
provides	O
some	O
useful	O
functionality	O
not	O
available	O
in	O
other	O
backup	B-Application
products	O
.	O
</s>
<s>
Amanda	B-Application
supports	O
tape-spanning	O
i.e.	O
</s>
<s>
if	O
a	O
backup	B-Application
set	O
does	O
not	O
fit	O
in	O
one	O
tape	O
,	O
it	O
will	O
be	O
split	O
into	O
multiple	O
tapes	O
.	O
</s>
<s>
A	O
commercial	O
version	O
of	O
Amanda	B-Application
was	O
developed	O
by	O
the	O
company	O
Zmanda	B-Application
.	O
</s>
<s>
It	O
includes	O
a	O
management	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
and	O
other	O
features	O
such	O
as	O
scheduler	O
,	O
plugin	O
framework	O
,	O
and	O
an	O
optional	O
cloud	B-General_Concept
backup	I-General_Concept
service	I-General_Concept
support	O
.	O
</s>
<s>
The	O
cloud	B-General_Concept
backup	I-General_Concept
option	O
uses	O
the	O
Amazon	B-General_Concept
S3	I-General_Concept
service	O
from	O
Amazon	B-Application
Web	I-Application
Services	I-Application
as	O
the	O
cloud	O
storage	O
provider	O
and	O
enables	O
safe	O
offsite	O
storage	O
of	O
the	O
Amanda	B-Application
backup	B-Application
data	O
.	O
</s>
<s>
The	O
plugin	O
framework	O
allows	O
for	O
application-specific	O
backups	B-Application
and	O
is	O
used	O
by	O
Amanda	B-Application
Enterprise	O
to	O
support	O
applications	O
such	O
as	O
Oracle	B-General_Concept
database	I-General_Concept
,	O
Samba	B-Language
network	B-General_Concept
share	I-General_Concept
,	O
NDMP	O
,	O
etc	O
.	O
</s>
<s>
Amanda	B-Application
Enterprise	O
also	O
supports	O
image-level	O
backup	B-Application
of	O
live	O
virtual	B-Architecture
machine	I-Architecture
running	O
on	O
VMware	O
infrastructure	O
.	O
</s>
