Previous Topic: VSAM Cluster ConsiderationsNext Topic: Guaranteed Space Attribute

MOVE/COPY › SMS and MOVE/COPY

SMS and MOVE/COPY

With the MOVE/COPY command under DSCL, Storage Administrators have the capability to move or copy data sets from one DASD device to another.

In an SMS environment, at allocation time, Automatic Class Selection routines determine which storage group a data set will ultimately reside within. CA Disk will honor this selection. Because of this, it is possible that when attempting to move or copy a data set, it will end up back on the same volume it came from.

In the example below, it is desired to move small data sets to a Storage Group reserved for small data sets. The ACS routines have been set to place data sets of sizes less than 50,000 kilobytes into a Storage Group called SMALL.

SCAN REALVOLS
   SELECT SGNAME=LARGE,CRI=(KBYTES,LT,50000)
      MOVE TOVOL=/

The previous accomplishes the following:

  1. Selects those volumes contained within the Storage Group called LARGE.
  2. Selects data sets that are smaller than 50,000 kilobytes.
  3. Moves them according to the ACS routines.

Note: The previous is an example of how to make sure that only large data sets remain in the LARGE pool or how to initially get large and small data sets into their respective pools when the pools are first formed.