ACT DASD Accounting Features
This section summarizes
MICS Accounting and Chargeback
support for data sets that reside on active DASD volumes (primary storage), for data sets that have been migrated to migration levels 1 or 2 by DFHSM, and for backup versions.micsrm140
This support allows you to implement the rate pyramid shown in the DFHSM Backup Data Sets section.
Charging For Active Data Sets On Primary Storage
MICS Accounting and Chargeback
supports both SMS and traditional device-dependent algorithms for DASD charging. This allows you to charge your SMS data sets by Storage Class and Management Class while you continue to charge your non- SMS data sets by device-dependent measurements.If you are currently using traditional algorithms to charge for SMS data sets, you can continue to do so, or you can implement Storage Class and Management Class algorithms for your SMS data sets without affecting the charges for non-SMS data sets.
MICS Accounting and Chargeback
also supports VSAM accounting from either the VTOC or ICF catalog.This support is provided by the use of three journal files, each with corresponding invoice categories and computation codes:
- The ACTJDA journal file is used for charging non-SMS data sets, both VSAM and non-VSAM, based on VTOC information.
- The ACTJMS journal file is used for charging SMS data sets by Storage Class and Management Class algorithms.
- The ACTJVS journal file can be used to charge VSAM data sets based on the ICF catalog, but this approach is not recommended.
Charging For Migrated Data Sets
MICS Accounting and Chargeback
supports charging for migrated data sets with the ACTJMG Migrated Data Journal file. This journal file is derived from the HSMMIG file and contains information about migrated data sets from the DFHSM Migration Control Data Set (MCDS).The ACTJMG journal file allows you to charge different rates for data sets based on the migration level of the data, level 1 or 2.
You can also charge different rates based on the SMS Management Class value.
Charging For Backup Versions
MICS Accounting and Chargeback
supports charging for backup versions of data sets via the ACTJBC Backup Data Journal file. This journal file is derived from the HSBBAC file and contains information about backup versions of data sets from the DFHSM Backup Control Data Set (BCDS).The SMS Management Class is often used to indicate the backup frequency of the data set and the number of backup versions that must be kept. Because data sets that are backed up more frequently, or require an extensive number of backup copies require more space and thus have a higher cost than do those with less stringent requirements, the ACTJBC journal file allows you to charge different rates for data sets based on the SMS Management Class value.
Note:
An alternate approach to using the ACTJBC journal file to charge for backup versions of data sets would be to have proportional rates for data sets on primary storage based on their backup requirements (frequency and number of versions kept). Since the size of the backup versions will be proportional to the size of the data set on primary storage, if you charge for megabyte hours based on Management Class, and if you can identify the data set's backup requirements based on its Management Class value, this should provide a reasonable approximation of its backup costs.