Target volume selection for command recalls of BDAM data sets can be influenced by using the DAOPTION parameter of the RECALL command. This parameter allows you to specify the acceptable target volume device types (in terms of track size) and how the recalled data is accessed (relative track or relative block). For instance, using the RELBLK option of the DAOPTION parameter allows a data set to be recalled to a device type with a smaller track size than the original level 0 volume. In this case, data is moved to “fill out the track” rather than in a track to track image as is the case for the RELATER and SMATTER options.
You can only use the DAOPTION parameter when recalling a data set as non-SMS-managed. You can use the FORCENONSMS parameter to recall a data set that would otherwise be returned as SMS managed.