For driving system z/OS V2R1 and where target data set is non SMS managed
When you select a zFS data set as a merge target (through line
command M) and that target data set exceeds 4 GB, Figure 1 will
be displayed with the total calculated size of the merge target data
set along with the merge candidate data set in GB information and
options for the user. You will have the following options:
- Allocate Data set using Data Class with Extended Addressability.
- Unmerge one or more file systems and reduce total size of file systems to less than 4 GB.
Figure 1. Panel:
Merge error for OMVS.ROOT
CPPP60E6 ------------- Merge Error for OMVS.ROOT --------------
COMMAND ==>
Error: Estimated target zFS file system size is 5.55 GB
A zFS that is > 4GB must use a Data Class that supports
extended addressability with no extended Format and DSORG = LS
To continue with the merge, select one of the following:
1 Allocate Data set using Data Class with Extended Addressability
2 Unmerge one or more file systems and reduce total size of files
systems to less than 4 GB
If you select option '1', Figure 2 will be displayed to collect Data Class with Extended Addressability. If you have already provided Data Class for the data set, this panel will be displayed with pre-populated Data Class.
Figure 2. Panel:
Specify SMS classes
CPPP60E7 ------------ Specify SMS Classes ( RF001424 ) -------------
COMMAND ==>
Data Set Name: OMVS.ROOT
Data Class ==>
Specify a Data Class that supports extended addressability with
No Extended Format and Recorg = LS
Press Enter to continue or End to cancel If you select option '2', it will be processed the same way as option 3 of Figure 1.
