<s>
The	O
IBM	B-Operating_System
Intelligent	I-Operating_System
Cluster	I-Operating_System
was	O
a	O
cluster	B-Architecture
solution	O
for	O
x86-based	O
high-performance	B-Architecture
computing	I-Architecture
composed	O
primarily	O
of	O
IBM	O
(	O
System	B-Operating_System
x	I-Operating_System
,	O
BladeCenter	B-General_Concept
and	O
System	B-Application
Storage	I-Application
)	O
components	O
,	O
integrated	O
with	O
network	O
switches	O
from	O
various	O
vendors	O
and	O
optional	O
high-performance	O
InfiniBand	B-Architecture
interconnects	O
.	O
</s>
<s>
The	O
solution	O
was	O
formerly	O
known	O
as	O
the	O
IBM	B-Application
eServer	I-Application
Cluster	B-Architecture
1300	O
(	O
or	O
e1300	B-Operating_System
)	O
based	O
on	O
then-current	O
Pentium	B-General_Concept
III	I-General_Concept
processors	O
,	O
which	O
was	O
introduced	O
in	O
November	O
2001	O
.	O
</s>
<s>
This	O
was	O
replaced	O
by	O
the	O
e1350	B-Operating_System
in	O
October	O
2002	O
with	O
the	O
introduction	O
of	O
Pentium	O
4-based	O
Intel	B-Device
Xeon	I-Device
processors	O
.	O
</s>
<s>
Later	O
(	O
in	O
2008-2009	O
)	O
solution	O
also	O
was	O
known	O
as	O
the	O
IBM	B-Operating_System
System	I-Operating_System
Cluster	I-Operating_System
1350	I-Operating_System
;	O
in	O
2010	O
released	O
line	O
with	O
final	O
IBM	B-Operating_System
Intelligent	I-Operating_System
Cluster	I-Operating_System
name	O
.	O
</s>
<s>
In	O
2014	O
this	O
cluster	B-Architecture
solution	O
was	O
sold	O
and	O
rebranded	O
as	O
Lenovo	O
Intelligent	O
Cluster	B-Architecture
.	O
</s>
<s>
The	O
Intelligent	O
Cluster	B-Architecture
system	O
is	O
a	O
(	O
integrated	O
,	O
factory-built	O
and	O
tested	O
)	O
rack	B-Application
tower-size	O
cluster	B-Architecture
solution	O
with	O
comprehensive	O
warranty	O
service	O
for	O
all	O
components	O
,	O
including	O
third-party	O
options	O
.	O
</s>
<s>
The	O
system	O
could	O
comprise	O
traditional	O
rack-optimized	O
nodes	O
,	O
as	O
well	O
as	O
IBM	B-General_Concept
BladeCenter	I-General_Concept
,	O
Flex	O
System	O
or	O
iDataPlex	B-Device
blade	O
nodes	O
,	O
or	O
another	O
rack-mounted	B-Application
servers	O
with	O
processor	O
choices	O
between	O
x86-based	O
(	O
Intel	B-Device
Xeon	I-Device
and	O
AMD	O
Opteron	O
)	O
or	O
uncommon	O
Power-based	O
processors	O
options	O
(	O
only	O
for	O
blade	B-Architecture
servers	I-Architecture
)	O
,	O
along	O
with	O
integrated	O
storage	O
and	O
switches	O
to	O
provide	O
a	O
turnkey	O
Linux	O
or	O
Microsoft	O
cluster	B-Architecture
environment	O
.	O
</s>
<s>
These	O
platform	O
also	O
supports	O
the	O
water-cooling	O
module	O
options	O
(	O
Heat	O
Exchange	O
Doors	O
)	O
for	O
some	O
rack	B-Application
towers	O
designs	O
.	O
</s>
<s>
Operating	O
system	O
choices	O
were	O
officially	O
limited	O
to	O
Enterprise	O
Linux	O
distributions	O
from	O
Red	O
Hat	O
and	O
SUSE	O
and	O
to	O
Microsoft	O
Windows	B-Operating_System
HPC	I-Operating_System
Server	I-Operating_System
2008	I-Operating_System
.	O
</s>
<s>
For	O
systems	O
management	O
IBM	O
offered	O
xCAT	B-Operating_System
.	O
</s>
<s>
Additional	O
software	O
,	O
such	O
as	O
GPFS	B-Application
and	O
LoadLeveler	O
,	O
could	O
also	O
be	O
ordered	O
from	O
IBM	O
.	O
</s>
