XCF_CF_CONNECTIVITY

Description:

Checks that the system has connectivity to each coupling facility, that multiple links (a/k/a CHPIDs or CFLINKs) to each coupling facility are both ONLINE and OPERATING, and identify single points of failure.

Reason for check:

To avoid single points of failure it is recommended that a system have connectivity to each coupling facility and that there are multiple links that are both ONLINE and OPERATIONAL.

z/OS® releases the check applies to:

z/OS V1R4 and later.

Parameters accepted:

None.

User override of IBM® values:

The following shows the default keywords for the check, which you can override on either a POLICY statement in the HZSPRMxx parmlib member or on a MODIFY command. This statement may be copied and modified to override the check defaults:

UPDATE CHECK(IBMXCF,XCF_CF_CONNECTIVITY) 
         SEVERITY(MED) INTERVAL(001:00) DATE('date_of_the_change')
         REASON('Your reason for making the update.')

Reference:

For more information, see z/OS MVS Setting Up a Sysplex.

Messages:

This check issues the following exception messages:

IXCH0446E
IXCH0448E
IXCH0450E
IXCH0453E

See the IXCH messages in z/OS MVS System Messages, Vol 10 (IXC-IZP).

SECLABEL recommended for MLS users:

SYSLOW