S550-0429-04

Defining multiple functional subsystems

Defining multiple functional subsystems

For improved throughput and more efficient use of system resources, you can define more than one FSA within an FSS. You also can define more than one FSS. Use Table 2 to determine the maximum number of FSSs and FSAs that are supported.

Table 2. Number of FSSs and FSAs supported
Number of FSSs Number of FSAs per FSS
2000 maximum 128 maximum (see Note)
Note:
The actual number of FSAs per FSS might be limited by the amount of storage each Download for z/OS FSA requires below the 16-megabyte line. See Selecting a region size to determine how much virtual storage size each FSA requires.