2. PERFORMANCE REPORTING ANALYSIS › 2.3 Auxiliary Storage Management Analysis › 2.3.2 Usage Guidelines › 2.3.2.2 ASM Data Set Sizing

2.3.2.2 ASM Data Set Sizing

The ASM Page/Swap Activity Report shows the slots allocated
and the average and maximum number of slots that were used.
If the SCPPSD and HARDVA Files are available at the WEEKS or
MONTHS level, you can use this report directly to adjust the
paging and swapping space data set sizes.  While excessive
allocation is wasteful of real storage, the data sets must be
large enough to gain the benefit of the new slot allocation
algorithms.

The Initialization and Tuning Guides give examples of
selecting initial sizes for the ASM data sets.  Section
2.3.4.2 presents techniques for sizing paging space data sets
and Section 2.3.4.3 presents techniques for sizing swapping
space data sets.