OPTIMIZE


   .-OPTimize(1)-------.   
>>-+-------------------+---------------------------------------><
   '-OPTimize--(--n--)-'

OPTIMIZE specifies the number of tracks to be read at a time, as follows:

If n is 1, DFSMSdss reads one track at a time.
If n is 2, DFSMSdss reads two tracks at a time.
If n is 3, DFSMSdss reads five tracks at a time.
If n is 4, DFSMSdss reads one cylinder at a time.

If OPTIMIZE is not specified, OPTIMIZE(1) is the default. Specifying OPTIMIZE (2), (3), or (4) reduces the time for a dump. Notice that this keyword uses more real and virtual storage. It also keeps the channel busy for longer blocks of time.

Recommendation: To improve performance and save dump space, specify the OPTIMIZE keyword with the COMPRESS keyword.