IOSPF354I

Explanation
The single point of failure service has detected
that all CHPIDs of volumes on which data sets dsn1 and dsn2 reside
share an I/O component internally in the host machine that has a possibility
of failing.
In the message text: vvvvv1
The volume serial of the first volume checked.
sddd1
The device number of the first device.
dsn1
The first dataset name or dataset description that is on the volume.
vvvvv2
The volume serial of the second volume checked.
sddd2
The device number of the second device.
dsn2
The second dataset name or dataset description that is on the
volume.
xxxxxxxxxxxxxxxxxxxxxxxx
A 12-byte identifier, that is host-dependent, representing I/O
components on the host.  Bits being set in this field help to identify
the single point of failure and indicate that all channel paths have
the component identified in common.The current identifier is mapped
as follows (from left to right) :Byte   Bit
(1-12) (1-8) Component identified
------ ----- ---------------------------------------
1      1-2   Comparison Status. These bits being on 
                indicates the comparison is invalid
                and can be ignored.
       3     Book. If you have a multi-book system, 
                you might consider finding alternate 
                paths to the device from a different
                book.
       4     Cage. If you have multiple I/O cages 
                in your configuration, you might 
                consider finding paths from 
                different I/O cages to your device.
       5     Failover Domain. If there is a failure
                of the IFB-MP card, some paths to 
                the device will be lost. Some 
                priority should be given to finding
                paths from different redundant 
                domains to the device.
       6     Fanout. Although redundant I/O
                interconnect will prevent any loss 
                of connectivity, some thought 
                should be given to spreading paths 
                across different fanout cards.              
       7     Domain. If there is a failure of the 
                IFB-MP card, all paths to the device 
                will be lost. Priority should be 
                given to finding paths from multiple 
                domains to the device.    
       8     Secondary STI/STI. Indicates all paths 
                to the device are from the same 
                channel card. Priority should be given 
                to spreading the paths across this 
                single point of failure.
2      1     Internal BUS. This is for internal use
                only and can be ignored.
       2     IBU.  This is for internal use only and
                can be ignored.
       3     Channel. Indicates a single path exists
                to the device.
       4-8   Reserved
3-12         Reserved      

System action
The system continues processing.  

Operator response
None.

System programmer response
The single point of failure might
be expected because of hardware limitations within your machine configuration.
 If the single point of failure is not expected, consult configuration
experts to analyze the condition.

Source
IOS

Module
IOSVSPOF