<s>
SIOS	B-Operating_System
LifeKeeper	I-Operating_System
(	O
formerly	O
known	O
as	O
SteelEye	B-Operating_System
LifeKeeper	I-Operating_System
)	O
is	O
a	O
high-availability	B-General_Concept
cluster	I-General_Concept
software	O
,	O
for	O
Linux	B-Application
computer	O
systems	O
.	O
</s>
<s>
After	O
AT&T	O
divested	O
the	O
LifeKeeper	B-Operating_System
division	O
to	O
NCR	O
,	O
SteelEye	O
acquired	O
the	O
technology	O
in	O
1999	O
.	O
</s>
<s>
High	B-General_Concept
availability	I-General_Concept
clusters	I-General_Concept
(	O
HAC	O
)	O
improve	O
application	O
availability	O
by	O
failing	O
them	O
over	O
or	O
switching	O
them	O
over	O
in	O
a	O
group	O
of	O
systems	O
—	O
as	O
opposed	O
to	O
High	B-Architecture
Performance	I-Architecture
Clusters	I-Architecture
,	O
which	O
improve	O
application	O
performance	O
by	O
running	O
them	O
on	O
multiple	O
systems	O
simultaneously	O
.	O
</s>
<s>
SIOS	B-Operating_System
LifeKeeper	I-Operating_System
provides	O
continuous	O
monitoring	O
of	O
the	O
entire	O
application	O
stack	O
and	O
will	O
recover	O
a	O
service	O
or	O
application	O
locally	O
or	O
on	O
another	O
cluster	O
node	O
at	O
the	O
same	O
site	O
or	O
another	O
geographic	O
location	O
.	O
</s>
<s>
It	O
supports	O
all	O
major	O
Linux	B-Application
distributions	O
and	O
accommodates	O
a	O
wide	O
range	O
of	O
storage	O
architecture	O
.	O
</s>
<s>
SIOS	B-Operating_System
LifeKeeper	I-Operating_System
is	O
SAP-certified	O
for	O
SAP	O
NetWeaver	O
and	O
SAP	O
S/4HANA	O
to	O
monitor	O
the	O
critical	O
services	O
and	O
automatically	O
apply	O
SAP	O
best	O
practices	O
for	O
nonstop	O
operation	O
of	O
critical	O
SAP	O
environments	O
.	O
</s>
<s>
Similar	O
products	O
include	O
Fujitsu	O
PRIMECLUSTER	O
,	O
IBM	B-Operating_System
HACMP	I-Operating_System
,	O
HP	B-Application
ServiceGuard	I-Application
,	O
IBM	O
Tivoli	O
System	O
Automation	O
for	O
Multiplatforms	O
(	O
SA	O
MP	O
)	O
,	O
Linux-HA	B-Operating_System
,	O
Microsoft	B-Operating_System
Cluster	I-Operating_System
Server	I-Operating_System
(	O
MSCS	B-Operating_System
)	O
,	O
NEC	O
ExpressCluster	O
,	O
Red	B-Operating_System
Hat	I-Operating_System
Cluster	I-Operating_System
Suite	I-Operating_System
,	O
Veritas	B-Operating_System
Cluster	I-Operating_System
Server	I-Operating_System
and	O
Sun	B-Operating_System
Cluster	I-Operating_System
.	O
</s>
<s>
In	O
2009	O
,	O
the	O
company	O
launched	O
a	O
program	O
enabling	O
users	O
of	O
HP	B-Application
ServiceGuard	I-Application
,	O
which	O
HP	O
stopped	O
selling	O
that	O
year	O
,	O
to	O
migrate	O
to	O
the	O
LifeKeeper	B-Operating_System
for	O
Linux	B-Application
product	O
.	O
</s>
<s>
LifeKeeper	B-Operating_System
has	O
won	O
the	O
Best	O
Clustering	O
Solution	O
Award	O
at	O
LinuxWorld	O
on	O
several	O
occasions	O
.	O
</s>
