ACT Avoiding VCA Duplicate Charging

Duplicate charging for migrated data sets can occur between HSM and VCA if Stage 1 migrated data sets reside on the volumes scanned by the
MICS Space Collector Option
.
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Duplicate charging for migrated data sets can occur between HSM and VCA if Stage 1 migrated data sets reside on the volumes scanned by the
MICS Space Collector Option
.
If you charge from the HSM Migrated Data Journal File and also from the VCA DAA or VSAM Resource Journal Files, then you must take care to avoid duplicate charging.
How To Avoid HSM/VCA Duplicate Charging
 
You can prevent HSM migrated data sets from being passed to the VCA DAA and VSAM Resource Journal Files by specifying NO for "Pass HSM data to DAA and _VS journal files" in Accounting Options General Installation Accounting Specifications and running the ACTXOPTS job.
Display this panel by selecting Option 3;2;1 on the Installation Accounting Primary Options Menu.
Avoiding File System Duplicate Charging
 
The Data Set Allocation (VCADAA) and VSAM Data Set Allocation (VCA_VS) files contains a single
MICS
observation for each z/OS data set including UNIX System Services (USS) data sets. The USS Directory Entry (HFSDIR) file contains a single
MICS
observation for each directory entry in file system data sets. With
MICS Accounting and Chargeback
Option, you can charge for file system data sets at either the single file image (VCADAA/VCA_VS) level or the directory entry (DIR) level. If you have activated the ACTJHF (HFS Resource) journal file to charge for file system data sets at the directory entry level,
MICS
will prevent duplicate charging from any other VCA files.
Note:
Although the
MICS Accounting and Chargeback
Option product supports USS file systems data for billing, we strongly discourage the use of the HFSDIR file for accounting due to the following:
  1. Only mounted file systems are scanned and contribute file information to the HFSDIR file.
  2. The space allocated for individual file(s) and/or directory(ies) does not account for the unused but allocated space in the file system.
A better alternative for USS file system accounting is the VCADAA file. It contains a single record for each USS file system data set (both mounted and unmounted) that contains the total space allocated to the file system.