z/OS DFSMS Implementing System-Managed Storage
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Determining Tape and Cartridge Configuration Changes

z/OS DFSMS Implementing System-Managed Storage
SC23-6849-00

The total number of tape and cartridge transports, and the maximum number of drives used concurrently, were determined from the first analysis. Because allocations for tape mount management candidates are intercepted and rerouted to DASD, you should re-examine tape requirements and check if you can reduce the number of tape transports.

Enter the following keywords to determine the tape configuration effect:

PGM(EXC(ADRDSSU,ARCCTL))
EXPDT(EXC(98000))
JOB(EXC(VRJOB))
DSN(EXC(*.DR.**))
UNIT(EXC(3420))
REP(USE)

Table 1 displays an 8-day summary report of maximum tape allocations.

Table 1. Sample Report of Maximum Tape Allocations
Sample Report of Maximum Tape Allocations
  HR 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 MAX TOT MNTS
HR MAX 5 12 12 12 11 6 4 2 2 2 5 5 6 6 6 4 6 3 6 8 9 1 4 6 12 3232

Rule:There are increased requirements for cartridge transports resulting from increased level 2 migration activity storage in the new environment. Consider these requirements when sizing the cartridge configuration.

Go to the previous page Go to the next page




Copyright IBM Corporation 1990, 2014