8.5.2.4 Contingency Time Frame

Limit the amount of data converted at a particular time, so if problems are experienced, the situation can be recovered or backed out.

8.5.3 SMS Implementation

The storage administrator performs the implementation of SMS, using ISMF to update the ACS routines. However, it is normally the DB2 administrator who is closely involved with the planning and positioning of data. An outline of activities required are listed below:

Definition of Data Classes

This is optional, although it is usually recommended that Data Classes be assigned. Even though it is not saved for non SMS managed data sets, the allocation attributes in the Data Class are used to allocate the data set.

Definition of Storage Classes

Data sets must have a Storage Class to qualify for SMS management. Here GUARANTEED SPACE is specified, along with availability, performance, and accessibility characteristics.

Definition of Management Classes

This is used for migration to level 1 and level 2 with or without backup, and indicates if there should be no HSM management (backup or migration). It also includes expiration of data sets and space release/compaction.

• Definition of Storage Groups

The Storage Group contains volumes that satisfy the service requirements of the data sets allocated to them. They can handle more than one type of data. Separate Storage Groups should be defined for production tablespaces, active logs, other production data, and non-production data.

Policy Documentation

The storage administrator defines policies that include:

Data set naming conventions

Volume naming conventions

Restrictions on use of volumes

The mapping of DB2 STOGROUPS with SMS Storage Groups

Use of Data Classes

Use of GUARANTEED SPACE parameter

Use of Storage Classes

Use of Management Classes

ACS Routines

The storage administrator uses the agreed policies to implement DB2 data under the control of SMS. This should be a documented procedure that includes:

Taking copies of the SMS control data set (ACDS, SCDS), and the source of the ACS routines prior to updating, for back out purposes

Adding the relevant code for the DB2 data to the ACS routines

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IBM 5655-DB2, 5695-DF1 manual SMS Implementation

5695-DF1, 5655-DB2 specifications

IBM 5655-DB2 and 5695-DF1 are significant components within the IBM software ecosystem, predominantly focusing on data management and integration solutions. These offerings cater primarily to enterprise environments that require robust database management systems and associated frameworks to maintain and manipulate data efficiently.

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