<s>
Solaris	B-General_Concept
Multiplexed	I-General_Concept
I/O	I-General_Concept
(	O
MPxIO	B-General_Concept
)	O
,	O
known	O
also	O
as	O
Sun	O
StorageTek	O
Traffic	O
Manager	O
(	O
SSTM	O
,	O
earlier	O
Sun	O
StorEdge	O
Traffic	O
Manager	O
)	O
,	O
is	O
multipath	B-General_Concept
I/O	I-General_Concept
software	O
for	O
Solaris/illumos	O
.	O
</s>
<s>
The	O
MPxIO	B-General_Concept
architecture	O
helps	O
protect	O
against	O
I/O	B-General_Concept
outages	O
due	O
to	O
I/O	B-General_Concept
controller	O
failures	O
.	O
</s>
<s>
Should	O
one	O
I/O	B-General_Concept
controller	O
fail	O
,	O
MPxIO	B-General_Concept
automatically	O
switches	O
to	O
an	O
alternate	O
controller	O
.	O
</s>
<s>
This	O
architecture	O
also	O
increases	O
I/O	B-General_Concept
performance	O
by	O
load	B-Application
balancing	I-Application
across	O
multiple	O
I/O	B-General_Concept
channels	O
.	O
</s>
<s>
It	O
was	O
integrated	O
within	O
the	O
Solaris	B-Application
operating	I-Application
system	I-Application
beginning	O
in	O
February	O
2000	O
with	O
Solaris	B-Application
8	I-Application
release	O
.	O
</s>
<s>
The	O
file	O
to	O
enable	O
or	O
disable	O
mpxio	B-General_Concept
has	O
been	O
moved	O
in	O
Solaris	B-Application
10	I-Application
from	O
/kernel/drv/scsi_vhci.conf	O
to	O
the	O
bottom	O
of	O
the	O
file	O
/kernel/drv/fp.conf	O
and	O
/kernel/drv/mpt.conf	O
.	O
</s>
