SMS_CDS_SEPARATE_VOLUMES

Description:

This check verifies that the active control data set (ACDS) and communications data set (COMMDS) are not residing on same volume.

Reason for check:

To ease recovery in case of failure, the ACDS should reside on a different volume than the COMMDS. Also, you should allocate a spare ACDS on a different volume. The control data set (ACDS or COMMDS) must reside on a volume that is not reserved by other systems for a long period of time because the control data set (ACDS or COMMDS) must be available to access for SMS processing to continue.

z/OS® releases the check applies to:

z/OS V1R12 and later.

User override of IBM values:

The following sample shows the defaults for customizable values for this check. Use this sample to make permanent check customizations in an HZSPRMxx parmlib member used at IBM Health Checker for z/OS startup. If you just want a one-time only update to the check defaults, omit the first line (ADDREPLACE POLICY) and use the UPDATE statement on a MODIFY hzsproc command. Note that using non-POLICY UPDATEs in HZSPRMxx can lead to unexpected results and is therefore not recommended. End of change

ADDREPLACE POLICY[(policyname)] [STATEMENT(name)]
UPDATE
CHECK(IBMSMS, SMS_CDS_SEPARATE_VOLUMES) 
SEVERITY(MED) 
DATE('date_of_the_change')
REASON('Your reason for making the update.')

Debug support:

Verbose support:

Parameters accepted:

Reference:

For additional information see Allocating an ACDS and Allocating a COMMDS in z/OS DFSMSdfp Storage Administration.

Messages:

This check issues the following exception messages:

IGDH1001E

See z/OS MVS System Messages, Vol 8 (IEF-IGD).