A.4.3 Storage Group

Four Storage Groups, SGDBFAST, SGDB20, SGDBCRIT, and SGDBTEST were defined using ISMF, option 6.2. Figure 93 on page 169 shows the associated panel used by the storage administrator for the definition of POOL Storage Groups:

 

POOL STORAGE GROUP DEFINE

Command ===>

 

 

SCDS Name . . . . . : SMS.SCDS1.SCDS

 

Storage Group Name

: SGDBTEST

 

To DEFINE Storage Group, Specify:

 

Description ==> STORAGE GROUP FOR DB2 TEST TABLE SPACES

==>

 

 

Auto Migrate . . Y

(Y, N, I or P) Migrate Sys/Sys Group Name . .

Auto Backup . . n

(Y or N)

Backup Sys/Sys Group Name . .

Auto Dump . . . n

(Y or N)

Dump Sys/Sys Group Name . . .

Dump Class . . .

 

(1 to 8 characters)

Dump Class . . .

 

Dump Class . . .

Dump Class . . .

 

Dump Class . . .

Allocation/migration Threshold: High . .

60

(1-99)

Low . . 25 (0-99)

Guaranteed Backup Frequency

 

(1 to 9999 or NOLIMIT)

DEFINE SMS Storage Group Status . . .... N

(Y or N)

 

Figure 93. Test Case 3 - ISMF Pool Storage Group Definition

Next, using the ISMF edit facility, the code was added to the ACS source to allow the selection of the newly defined Storage Groups, based upon the Storage Class variable &STORCLAS. Figure 94 on page 169 shows the sample code used:

/************************************/

/* STORAGE GROUP SELECTION ROUTINE */ /************************************/

SELECT

WHEN (&STORCLAS = 'SCDBTEST')

SET &STORGRP = 'SGDBTEST'

WHEN (&STORCLAS = 'SCDBFAST')

SET &STORGRP = 'SGDBFAST'

WHEN (&STORCLAS = ’SCDBCRIT’)

SET &STORGRP = ’SGDBCRIT’

WHEN (&STORCLAS = 'SCDBMED')

SET &STORGRP = 'SGDB20'

END

Figure 94. Test Case 3 - Storage Group Routine Extract

Three disk volumes were allocated to Storage Group SGDBTEST, one on each available RVA. Likewise, two volumes were assigned to each of the other Storage Groups, SGDBFAST, SGDBCRIT and SGDB20. Figure 95 on page 170 shows an

Test Cases for DB2 Table Space Data Sets 169

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Image 191
IBM 5695-DF1, 5655-DB2 manual Pool Storage Group Define, Sgdbtest

5695-DF1, 5655-DB2 specifications

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