•The naming standard for the data sets is shown in 3.8.5, “Image Copy Names” on page 24, using as a high level qualifier the subsystem identifier, followed by IC. This name includes three codes in the second qualifier:
Col 1 P or S to indicate primary or secondary copy
Col 2 S or H to indicate standard or critical copy
Col 3 D, W or M to indicate daily, weekly or monthly copy
•Storage Class, Management Class and Storage Group constructs are defined for all image copies on all subsystems as specified in 7.5, “Image Copies” on page 71.
•Primary image copies are placed on SGDBIC or SGDBICH
•Secondary image copies are placed on SGDBARCH
•The ACS routines from the example in B.2, “Archive Logs” on page 191 will be extended to support the image copy data sets.
B.3.1 Storage Class
Two additional Storage Classes were defined:
•SCDBIC for data sets with standard performance requirements
•SCDBICH for data sets with high performance requirements
Figure 128 on page 192 shows an extract of the Storage Class ACS routine used in the previous tests, now including the separation of image copies to provide different levels of performance, depending upon the naming convention:
/************************************************/
/* STORAGE CLASS | */ |
/* FILTLIST DEFINITIONS | */ |
/************************************************/
FILTLIST DBSYS | INCLUDE(DB2*.BSDS*.**, |
| DB2*.LOGCOPY*.DS*) |
FILTLIST DBARCH | INCLUDE(DB2*.ARCHLOG*.**) |
FILTLIST ICHIGH | INCLUDE(DB2%IC.PH*.T*.*.A*) |
FILTLIST ICSTD | INCLUDE(DB2%IC.S*.T*.*.A*, |
| DB2%IC.%S*.T*.*.A*) |
/************************************************/
/* SELECTION ROUTINE FOR DB2 RECOVERY DATA SETS */ /************************************************/
SELECT
WHEN (&DSN = &DBSYS)
SET &STORCLAS = 'SCDBACTL' WHEN (&DSN = &DBARCH)
SET &STORCLAS = 'SCDBARCH' WHEN (&DSN = &ICSTD)
SET &STORCLAS = 'SCDBIC' WHEN (&DSN = &ICHIGH)
SET &STORCLAS = 'SCDBICH' OTHERWISE SET &STORCLAS = ''
END
Figure 134. Storage Class Routine Extract Incorporating Image Copies
Test Cases for DB2 Recovery Data Sets 195
