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Chapter 13. Data Migration in zSeries environments 269
===>
Use ENTER to Perform Selection;
Use HELP Command for Help; Use END Command to Exit.
In this example all volumes that were selected through the filtering in the previous panel no
longer allow any new allocation on these volumes. But this happens only after the updated
SCDS is activated and copied into the Active Control Data Set (ACDS). A way to activate a
new SMS configuration is through the ISMF Primary Menu panel with option 8. Under the
CDS APPLICATION SELECTION choose option 4 and then 5 to finally perform the change.
To show how powerful, meaningful naming conventions for VOLSERs might be combined with
the selection capabilities in ISMF, Example 13-11 shows an example of how to change the
status of 920 volumes at once. This example assumes a contiguous number range for the
volume serial numbers.
Example 13-11 Indicate SMS volume status change for 920 volumes
STORAGE GROUP VOLUME SELECTION
Command ===>
CDS Name . . . . . : SYS1.DFSMS.SCDS
Storage Group Name : XC
Storage Group Type : POOL
Select One of the following Options:
3 1. Display - Display SMS Volume Statuses (Pool & Copy Pool Backup only)
2. Define - Add Volumes to Volume Serial Number List
3. Alter - Alter Volume Statuses (Pool & Copy Pool Backup only)
4. Delete - Delete Volumes from Volume Serial Number List
Specify a Single Volume (in Prefix), or Range of Volumes:
Prefix From To Suffix Type
______ ______ ______ _____ _
===> DB2 001 300 X
===> IMS 001 350 x
===> LRG 001 150 X
===> TMP 001 120 x
Use ENTER to Perform Selection;
Use HELP Command for Help; Use END Command to Exit.
Through this approach in utilizing the SMS volume status, the data gradually moves over to
the new environment. This is not the fastest approach, but it is the approach with the least
effort required. To speed up the process you run DFSMSdss full volume logical copy
operations on all source volumes as suggested by the storage administrator, but do not
specify target volumes. An example is given in Example 13-5 on page 264. Then allocation
runs through the standard SMS allocation, automatically selects the correct target volume,
and moves the data sets which are not allocated at the time the job executes. Another option
is to run DFSMSdss migration not on a volume level, which allows more control, but plan for
DFSMSdss migration jobs on the entire SG level, perhaps over the weekend. Example 13-12
illustrates this. You might specify for STORGRP a list of storage group names to address
multiple storage groups at the same time.
Example 13-12 DFSMSdss moves all data sets out of a storage group
//* COMMAND 'V SMS,VOL(AAAAAA,*),D,N'
// COMMAND 'D SMS,SG(SG1),LISTVOL'
//* -------------------------------------------------------------- ***
//MOVEDATA EXEC PGM=ADRDSSU
//SYSPRINT DD SYSOUT=*