<s>
Stratus	B-General_Concept
Technologies	I-General_Concept
,	O
Inc	O
.	O
is	O
a	O
major	O
producer	O
of	O
fault	B-General_Concept
tolerant	I-General_Concept
computer	O
servers	O
and	O
software	O
.	O
</s>
<s>
The	O
company	O
was	O
founded	O
in	O
1980	O
as	O
Stratus	B-General_Concept
Computer	I-General_Concept
,	O
Inc	O
.	O
in	O
Natick	O
,	O
Massachusetts	O
,	O
and	O
adopted	O
its	O
present	O
name	O
in	O
1999	O
.	O
</s>
<s>
Prior	O
to	O
2022	O
,	O
Stratus	B-General_Concept
Technologies	I-General_Concept
,	O
Inc	O
.	O
was	O
a	O
privately	O
held	O
company	O
,	O
owned	O
solely	O
by	O
Siris	O
Capital	O
Group	O
.	O
</s>
<s>
The	O
parent	O
company	O
,	O
Stratus	B-General_Concept
Technologies	I-General_Concept
Bermuda	O
Holdings	O
,	O
Ltd.	O
,	O
was	O
incorporated	O
in	O
Bermuda	O
.	O
</s>
<s>
Stratus	B-General_Concept
Computer	I-General_Concept
was	O
a	O
Marlborough	O
,	O
Massachusetts	O
,	O
based	O
producer	O
of	O
fault	B-General_Concept
tolerant	I-General_Concept
minicomputers	B-Architecture
.	O
</s>
<s>
It	O
competed	O
with	O
computers	O
from	O
Tandem	O
Computers	O
and	O
to	O
a	O
lesser	O
extent	O
Digital	O
Equipment	O
Corporation	O
's	O
VAX	B-Device
.	O
</s>
<s>
Then	O
,	O
from	O
1985	O
to	O
1993	O
,	O
its	O
computers	O
were	O
resold	O
by	O
IBM	O
under	O
the	O
IBM	B-General_Concept
System/88	I-General_Concept
brand	O
.	O
</s>
<s>
The	O
company	O
was	O
named	O
Stratus	B-General_Concept
Technologies	I-General_Concept
,	O
Inc	O
.	O
</s>
<s>
On	O
July	O
16	O
,	O
2010	O
,	O
as	O
a	O
reverse	O
merger	O
between	O
YMax	B-Protocol
and	O
VocalTec	O
-	O
all	O
of	O
the	O
Stratus	O
Telecommunications	O
technologies	O
are	O
owned	O
by	O
VocalTec	O
.	O
</s>
<s>
Now	O
privately	O
held	O
,	O
Stratus	B-General_Concept
Technologies	I-General_Concept
,	O
Inc	O
.	O
was	O
acquired	O
by	O
Siris	O
Capital	O
Group	O
on	O
April	O
28	O
,	O
2014	O
.	O
</s>
<s>
Its	O
legacy	O
product	O
line	O
was	O
originally	O
based	O
on	O
Motorola	B-Device
MC68000	I-Device
processors	O
(	O
FT	O
and	O
XA	O
series	O
)	O
,	O
and	O
then	O
migrated	O
to	O
Intel	B-General_Concept
i860	I-General_Concept
processors	O
(	O
XA/R	O
series	O
)	O
,	O
then	O
to	O
Hewlett-Packard	O
'	O
s	O
PA-RISC	B-Device
processors	O
(	O
Continuum	O
series	O
)	O
,	O
and	O
finally	O
to	O
Intel	B-Device
Xeon	I-Device
processors	O
(	O
V	O
Series	O
)	O
.	O
</s>
<s>
That	O
line	O
runs	O
the	O
VOS	B-General_Concept
operating	O
system	O
,	O
which	O
originally	O
had	O
many	O
features	O
inspired	O
by	O
or	O
derived	O
from	O
Multics	B-Application
.	O
</s>
<s>
Other	O
operating	O
systems	O
supported	O
on	O
the	O
legacy	O
platforms	O
(	O
XA/R	O
,	O
Jetta	O
/	O
Continuum	O
)	O
—	O
HP-UX	B-Application
and	O
a	O
home-grown	O
UNIX	O
product	O
called	O
FTX	O
(	O
Fault-Tolerant	B-General_Concept
UNIX	O
)	O
—	O
are	O
supported	O
but	O
no	O
longer	O
actively	O
sold	O
.	O
</s>
<s>
The	O
company	O
sells	O
models	O
of	O
ftServer	O
designated	O
as	O
entry-level	O
,	O
mid-range	O
and	O
enterprise-class	O
fault	B-General_Concept
tolerant	I-General_Concept
servers	O
.	O
</s>
