<s>
IBM	B-Device
Power	I-Device
Systems	I-Device
is	O
a	O
family	O
of	O
server	B-Application
computers	I-Application
from	O
IBM	O
that	O
are	O
based	O
on	O
its	O
Power	B-Device
processors	O
.	O
</s>
<s>
It	O
was	O
created	O
in	O
2008	O
as	O
a	O
merger	O
of	O
the	O
System	B-Device
p	I-Device
and	O
System	B-Device
i	I-Device
product	O
lines	O
.	O
</s>
<s>
IBM	O
had	O
two	O
distinct	O
POWER	B-Device
-	O
and	O
PowerPC-based	O
hardware	O
lines	O
since	O
the	O
early	O
1990s	O
:	O
</s>
<s>
Servers	O
and	O
workstations	O
using	O
POWER	B-Device
and	O
PowerPC	B-Architecture
processors	I-Architecture
in	O
the	O
RS/6000	B-Device
family	O
(	O
later	O
known	O
as	O
pSeries	O
,	O
then	O
System	B-Device
p	I-Device
)	O
,	O
running	O
IBM	B-Application
AIX	I-Application
and	O
Linux	B-Application
on	I-Application
Power	I-Application
.	O
</s>
<s>
After	O
the	O
introduction	O
of	O
the	O
POWER4	B-Device
processor	O
in	O
2001	O
,	O
there	O
was	O
little	O
difference	O
between	O
both	O
the	O
"	O
p	O
"	O
and	O
the	O
"	O
i	O
"	O
hardware	O
;	O
the	O
only	O
differences	O
were	O
in	O
the	O
software	O
and	O
services	O
offerings	O
.	O
</s>
<s>
With	O
the	O
introduction	O
of	O
the	O
POWER5	B-Device
processor	O
in	O
2004	O
,	O
even	O
the	O
product	O
numbering	O
was	O
synchronized	O
.	O
</s>
<s>
The	O
System	B-Device
i5	I-Device
570	O
was	O
virtually	O
identical	O
to	O
the	O
System	B-Device
p5	I-Device
570	O
.	O
</s>
<s>
In	O
April	O
2008	O
,	O
IBM	O
officially	O
merged	O
the	O
two	O
lines	O
of	O
servers	O
and	O
workstations	O
under	O
the	O
same	O
name	O
,	O
Power	B-Device
,	O
and	O
later	O
Power	B-Device
Systems	I-Device
,	O
with	O
identical	O
hardware	O
and	O
a	O
choice	O
of	O
operating	O
systems	O
,	O
software	O
,	O
and	O
service	O
contracts	O
,	O
based	O
formerly	O
on	O
a	O
POWER6	B-Device
architecture	O
.	O
</s>
<s>
The	O
PowerPC	B-Architecture
line	O
was	O
discontinued	O
.	O
</s>
<s>
With	O
Release	O
8	O
of	O
Red	O
Hat	O
Enterprise	O
Linux	O
,	O
IBM	O
has	O
completed	O
transition	O
of	O
POWER8	B-Device
and	O
POWER9	O
servers	O
to	O
little-endian	O
mode	O
for	O
Linux	O
.	O
</s>
<s>
AIX	B-Application
and	O
IBM	B-Application
i	I-Application
continue	O
to	O
run	O
in	O
big-endian	O
mode	O
.	O
</s>
<s>
IBM	B-Device
Power	I-Device
Systems	I-Device
models	O
:	O
</s>
<s>
IBM	O
PowerVM	B-Application
provides	O
the	O
virtualisation	O
solution	O
for	O
Power	B-Device
Systems	I-Device
servers	O
.	O
</s>
