<s>
Live	B-General_Concept
Partition	I-General_Concept
Mobility	I-General_Concept
is	O
a	O
chargeable	O
Live	O
migration	O
feature	O
of	O
IBM	O
POWER6	B-Device
,	O
POWER7	B-Device
,	O
POWER8	B-Device
and	O
POWER9	B-Device
servers	O
,	O
available	O
since	O
2007	O
,	O
that	O
allows	O
a	O
running	O
LPAR	B-Device
to	O
be	O
relocated	O
from	O
one	O
system	O
to	O
another	O
.	O
</s>
<s>
Live	B-General_Concept
Partition	I-General_Concept
Mobility	I-General_Concept
,	O
a	O
component	O
of	O
the	O
PowerVM	B-Application
Enterprise	O
Edition	O
hardware	O
feature	O
,	O
provides	O
the	O
ability	O
to	O
move	O
AIX	B-Application
,	O
IBM	B-Application
i	I-Application
,	O
and	O
Linux	O
logical	B-Device
partitions	I-Device
from	O
one	O
system	O
to	O
another	O
.	O
</s>
<s>
The	O
source	O
and	O
target	O
systems	O
must	O
have	O
access	O
to	O
the	O
same	O
network	O
and	O
SANs	O
but	O
need	O
not	O
be	O
of	O
the	O
same	O
type	O
,	O
the	O
only	O
requirement	O
is	O
they	O
use	O
POWER6	B-Device
,	O
POWER7	B-Device
,	O
or	O
POWER8	B-Device
processors	O
.	O
</s>
<s>
Partitions	B-Device
that	O
are	O
to	O
be	O
relocated	O
must	O
be	O
fully	O
virtualized	O
(	O
i.e.	O
</s>
<s>
Any	O
sized	O
partition	B-Device
can	O
be	O
moved	O
;	O
essentially	O
,	O
memory	O
is	O
copied	O
asynchronously	O
from	O
one	O
system	O
to	O
another	O
to	O
create	O
a	O
clone	O
of	O
a	O
running	O
partition	B-Device
,	O
with	O
"	O
dirty	O
"	O
pages	O
being	O
re-copied	O
as	O
necessary	O
.	O
</s>
<s>
when	O
a	O
high	O
percentage	O
of	O
the	O
pages	O
have	O
been	O
successfully	O
copied	O
across	O
)	O
,	O
the	O
partition	B-Device
is	O
transitioned	O
to	O
the	O
target	O
machine	O
and	O
any	O
remaining	O
pages	O
are	O
copied	O
across	O
synchronously	O
.	O
</s>
<s>
Live	B-General_Concept
Partition	I-General_Concept
Mobility	I-General_Concept
is	O
used	O
to	O
avoid	O
outages	O
for	O
planned	O
server	O
maintenance	O
,	O
for	O
load	O
balancing	O
across	O
multiple	O
servers	O
and	O
for	O
energy	O
conservation	O
.	O
</s>
