<s>
The	O
Cray	B-Device
XMS	I-Device
was	O
a	O
vector	B-Operating_System
processor	I-Operating_System
minisupercomputer	B-Device
sold	O
by	O
Cray	O
Research	O
from	O
1990	O
to	O
1991	O
.	O
</s>
<s>
The	O
XMS	O
was	O
originally	O
designed	O
by	O
Supertek	O
Computers	O
Inc	O
.	O
as	O
the	O
Supertek	O
S-1	O
,	O
intended	O
to	O
be	O
a	O
low-cost	O
air-cooled	O
clone	O
of	O
the	O
Cray	B-Device
X-MP	I-Device
with	O
a	O
CMOS	B-Device
re-implementation	O
of	O
the	O
X-MP	O
processor	O
architecture	O
,	O
and	O
a	O
VMEbus-based	O
Input/Output	O
Subsystem	O
(	O
IOS	O
)	O
.	O
</s>
<s>
The	O
XMS	O
could	O
run	O
Cray	O
's	O
UNICOS	B-Operating_System
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
The	O
CRAY	B-Device
XMS	I-Device
system	O
was	O
the	O
first	O
CRI	O
computer	O
system	O
to	O
be	O
supported	O
by	O
removable	O
disk	O
drives	O
.	O
</s>
<s>
The	O
XMS	O
was	O
a	O
short-lived	O
model	O
,	O
and	O
was	O
superseded	O
by	O
the	O
Cray	B-Device
Y-MP	I-Device
EL	I-Device
,	O
which	O
was	O
under	O
development	O
by	O
Supertek	O
(	O
as	O
the	O
Supertek	O
S-2	O
and	O
briefly	O
as	O
the	O
Cray	O
YMS	O
)	O
at	O
the	O
time	O
of	O
the	O
Cray	O
acquisition	O
.	O
</s>
<s>
Though	O
powerful	O
for	O
its	O
time	O
,	O
the	O
CRAY	B-Device
XMS	I-Device
only	O
had	O
half	O
the	O
processing	O
power	O
of	O
Microsoft	O
's	O
original	B-Application
Xbox	I-Application
gaming	O
console	O
.	O
</s>
