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* FOR DB2 CATALOG AND DIRECTORY (DB2 SUBSYSTEM PE11) */
/**********************************************************************/
WHEN (&DSN = &PE11CAT | &STORCLAS = 'SCPE1CAT')
SET &STORCLAS = 'SCPE1CAT'
/**********************************************************************/
/* FOR DB2 SAP DATABASES(DB2 SUBSYSTEM: PE11) */
/**********************************************************************/
WHEN (&DSN = &PE11SAP | &STORCLAS = 'SCPE1SAP')
SET &STORCLAS = 'SCPE1SAP'
... etc.
STORGRP:
PE1
SGPE1CAT - for DB2 catalog and directory (volume PE1V00);
SGPE1LG1 - for DB2 logcopy 1 (volumes PE1V02);
SGPE1ARC - for DB2 archive logs (volume PE1V13 - PE1V16);
SGPE1LG2 - for DB2 logcopy 2 (volumes PE1V03);
SGPE1SAP - for DB2 SAP databases (volumes PE1V04 - PE1V12);
SGPE1WRK - for working datasets (volume PE1VWK);
SGPE1IC - for DB2 image copies (volumes PE1V17 - PE11V20);
/**********************************************************************/
/* DB2 SYSTEM CATALOG AND DIRECTORY(DB2 SUBSYSTEM: PE11) */
/**********************************************************************/
WHEN (&STORCLAS='SCPE1CAT')
SET &STORGRP = 'SGPE1CAT'
/**********************************************************************/
/* DB2 LOGCOPY1 (DB2 SUBSYSTEM: PE11)
*/
/**********************************************************************/
WHEN (&STORCLAS='SCPE1LG1')
SET &STORGRP = 'SGPE1LG1'
/**********************************************************************/
... etc.
SMS consideration for DB2 active logs and BSDS
DB2 requires two copies of the active logs and BSDS data sets because of their importance
for DB2 processing and stability. DB2 keeps them current in parallel. If one copy is not
readable, another copy is available. For availability reasons, place the DB2 active log and
BSDS copies on to separate disks using one of the following methods:
► Use two SMS storage groups with the following fields:
– LOGCOPY1, BSDS01
– LOGCOPY2, BSDS02
Now LOGCOPY1 and LOGCOPY2 are not on the same volumes, and BSDS01 and
BSDS02 are not on the same volumes.
► Use one SMS storage group with guaranteed space, and specify guaranteed space for
(COPY1,BSDS01) and (COPY2, BSDS02) to separate volumes and increase availability.
Use a separate ICF catalog for the active log data sets and the BSDS to accommodate the
SMS Log Copy Pool. If archive logs go to DASD, which is a good practice, you can use SMS
storage groups for all DB2 members in the data sharing group.
Appendix B. Planning, preparing, and implementing the SAP landscape 179