<s>
In	O
software	O
testing	O
,	O
recovery	B-Application
testing	I-Application
is	O
the	O
activity	O
of	O
testing	O
how	O
well	O
an	O
application	B-Application
is	O
able	O
to	O
recover	O
from	O
crashes	B-General_Concept
,	O
hardware	O
failures	O
and	O
other	O
similar	O
problems	O
.	O
</s>
<s>
Recovery	B-Application
testing	I-Application
should	O
not	O
be	O
confused	O
with	O
reliability	O
testing	O
,	O
which	O
tries	O
to	O
discover	O
the	O
specific	O
point	O
at	O
which	O
failure	O
occurs	O
.	O
</s>
<s>
Recovery	B-Application
testing	I-Application
is	O
basically	O
done	O
in	O
order	O
to	O
check	O
how	O
fast	O
and	O
better	O
the	O
application	B-Application
can	O
recover	O
against	O
any	O
type	O
of	O
crash	B-General_Concept
or	O
hardware	O
failure	O
etc	O
.	O
</s>
<s>
Recovery	B-Application
testing	I-Application
is	O
simulating	O
failure	O
modes	O
or	O
actually	O
causing	O
failures	O
in	O
a	O
controlled	O
environment	O
.	O
</s>
<s>
Following	O
a	O
failure	O
,	O
the	O
failover	B-General_Concept
mechanism	O
is	O
tested	O
to	O
ensure	O
that	O
data	O
is	O
not	O
lost	O
or	O
corrupted	O
and	O
that	O
any	O
agreed	O
service	O
levels	O
are	O
maintained	O
(	O
e.g.	O
,	O
function	O
availability	O
or	O
response	O
times	O
)	O
.	O
</s>
<s>
Examples	O
of	O
recovery	B-Application
testing	I-Application
:	O
</s>
<s>
While	O
an	O
application	B-Application
is	O
running	O
,	O
suddenly	O
restart	O
the	O
computer	O
,	O
and	O
afterwards	O
check	O
the	O
validness	O
of	O
the	O
application	B-Application
's	O
data	O
integrity	O
.	O
</s>
<s>
While	O
an	O
application	B-Application
is	O
receiving	O
data	O
from	O
a	O
network	B-Architecture
,	O
unplug	O
the	O
connecting	O
cable	O
.	O
</s>
<s>
After	O
some	O
time	O
,	O
plug	O
the	O
cable	O
back	O
in	O
and	O
analyze	O
the	O
application	B-Application
's	O
ability	O
to	O
continue	O
receiving	O
data	O
from	O
the	O
point	O
at	O
which	O
the	O
network	B-Architecture
connection	O
disappeared	O
.	O
</s>
