Health Checker alert CA1_TMC_AUDIT_PLACEMENT does not seems correct

Products

• CA 1 Flexible Storage

Issue/Introduction

Our  HC alert in our environment is getting the following messages even though the TMC and AUDIT datasets are on different volumes:

 

1************************************************************************
 *                                                                      *
 * HZSU002I Log stream: HZS.HEALTH.CHECKER.HISTORY                      *
 *                                                                      *
 * Filter: CHECK(CA_1,CA1_TMC_AUDIT_PLACEMENT)                          *
 * Filter: SYSNAME(1234)                                                *
 * Filter: Only checks with exception(s)                                *
 *                                                                      *
 ************************************************************************

 

 ************************************************************************
 *                                                                      *
 * Start: CHECK(CA_1,CA1_TMC_AUDIT_PLACEMENT)                           *
 *        Sysplex: PLEX    System: 1234                             *
 *                                                                      *
 ************************************************************************
 CHECK(CA_1,CA1_TMC_AUDIT_PLACEMENT)
 SYSPLEX:    PLEX  SYSTEM: 1234
 CHECK DATE: 20201208  CHECK SEVERITY: MEDIUM-DYNAMIC

 Single Point of Failure Analysis for TMC and Audit

 File   Data Set Name                                 Volume
 -----  --------------------------------------------  ------
 TMC    TMS.TMC                                 PACK01
 Audit  TMS.AUDIT                               PACK02

 IOSPF352I Volumes PACK01 (xxxx)  with
 TMS.TMC and PACK02 (yyyy) with
 TMS.AUDIT share the same physical control unit.

 

 

Environment

Release : 14.0

Component : CA 1 Tape Management

Cause

TMC and Audit are on the same control unit.

Resolution

PTF SO16131 introduced extra Health Checking for SPOF (Single Point of Failure).

Since then, another PTF has been created to provide options if you want this condition checked.  This PTF is LU03509.  You can download it via this link.

Alternative you could move the TMC to a different control unit.  You can do this dynamically with TMSXTEND utility.  You cannot move the Audit file without stopping tape processing, but format a new one without stopping tape activity.