<s>
The	O
Sun	O
Fire	O
15K	O
(	O
codenamed	O
Starcat	O
)	O
was	O
an	O
enterprise-class	O
server	B-Application
computer	I-Application
from	O
Sun	O
Microsystems	O
based	O
on	O
the	O
SPARC	B-Architecture
V9	I-Architecture
processor	O
architecture	O
.	O
</s>
<s>
It	O
was	O
announced	O
on	O
September	O
25	O
,	O
2001	O
,	O
in	O
New	O
York	O
City	O
,	O
superseding	O
the	O
Sun	B-Device
Enterprise	I-Device
10000	I-Device
.	O
</s>
<s>
The	O
Sun	O
Fire	O
15K	O
supported	O
up	O
to	O
106	O
UltraSPARC	B-General_Concept
III	O
processors	O
(	O
up	O
to	O
1.2GHz	O
)	O
,	O
or	O
72	O
UltraSPARC	B-General_Concept
IVs	I-General_Concept
(	O
up	O
to	O
1.35GHz	O
)	O
installed	O
across	O
18	O
system	O
boards	O
(	O
Uniboards	O
,	O
containing	O
CPU	O
sockets	O
and	O
RAM	O
slots	O
)	O
.	O
</s>
<s>
With	O
the	O
UltraSPARC	B-General_Concept
III	O
,	O
Sun	O
supported	O
up	O
to	O
17	O
dual-socket	O
"	O
MaxCPU	O
"	O
processor	O
cards	O
in	O
place	O
of	O
I/O	B-General_Concept
mezzanine	O
cards	O
,	O
a	O
configuration	O
not	O
supported	O
with	O
UltraSPARC	B-General_Concept
IV	I-General_Concept
.	O
</s>
<s>
A	O
maximum	O
of	O
72	O
PCI	B-Protocol
I/O	B-General_Concept
slots	O
are	O
available	O
.	O
</s>
<s>
The	O
system	O
can	O
be	O
divided	O
into	O
a	O
maximum	O
of	O
18	O
secure	O
independent	O
domains	O
,	O
each	O
of	O
which	O
is	O
a	O
separate	O
machine	O
with	O
its	O
own	O
filesystems	O
,	O
root	O
password	O
and	O
the	O
ability	O
to	O
run	O
different	O
versions	O
of	O
Solaris	B-Application
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
15K	O
contains	O
two	O
system	O
controllers	O
(	O
duplicated	O
for	O
redundancy	O
)	O
,	O
which	O
are	O
embedded	O
SPARC	B-Architecture
computers	O
running	O
Solaris	B-Application
and	O
used	O
to	O
manage	O
the	O
15K	O
and	O
perform	O
tasks	O
such	O
as	O
booting	O
and	O
shutting	O
down	O
domains	O
and	O
assigning	O
Uniboards	O
to	O
domains	O
.	O
</s>
<s>
The	O
15K	O
contains	O
minimal	O
storage	O
in	O
itself	O
(	O
only	O
system	O
controller	O
boot	O
disks	O
)	O
;	O
it	O
is	O
connected	O
via	O
SAN	O
to	O
a	O
separate	O
storage	B-General_Concept
array	I-General_Concept
.	O
</s>
<s>
The	O
Sun	B-Device
Fire	I-Device
12K	I-Device
(	O
codenamed	O
Starkitty	O
)	O
,	O
was	O
a	O
reduced	O
configuration	O
version	O
of	O
the	O
15K	O
,	O
introduced	O
in	O
April	O
2002	O
.	O
</s>
<s>
It	O
reached	O
end-of-life	O
in	O
January	O
,	O
2009	O
,	O
and	O
was	O
superseded	O
by	O
the	O
Sun	B-Architecture
SPARC	I-Architecture
Enterprise	O
M9000	O
server	O
.	O
</s>
<s>
The	O
E25K	O
supports	O
up	O
to	O
72	O
dual-core	O
UltraSPARC	B-General_Concept
IV+	I-General_Concept
processors	O
(	O
up	O
to	O
1.95GHz	O
)	O
.	O
</s>
<s>
For	O
overall	O
I/O	B-General_Concept
bandwidth	O
,	O
up	O
to	O
35.8-GB/s	O
sustained	O
.	O
</s>
<s>
Up	O
to	O
72	O
hot	O
swappable	O
PCI-X	O
I/O	B-General_Concept
slots	O
;	O
54	O
slots	O
are	O
90MHz	O
,	O
18	O
slots	O
are	O
33MHz	O
.	O
</s>
