Chapter 2. Summary of Considerations

This book describes the exploitation of storage by DB2 for OS/390 (DB2). Two major areas are analyzed:

1.DB2 and storage management

2.DB2 and storage servers

This chapter summarizes the major conclusions of this project.

2.1 DB2 and Storage Management

A detailed analysis of the different types of DB2 data sets shows that DFSMS can automatically manage all of the data sets DB2 uses and requires. However, there are considerations and choices that need to be made to tailor DFSMS to suit the individual customer’s systems environment and organization.

In general, a large percentage of your data sets can be managed with DFSMS storage pools, thus reducing the workload and the interaction of your DB2 database administrators (DBAs) and storage administrators. Only the most critical data, as defined with service level agreements or as revealed by monitoring, may require special attention.

2.1.1 Benefits of DFSMS

Using DFSMS, the DB2 administrator gains the following benefits:

Simplified data allocation

Improved allocation control

Improved performance management

Automated disk space management

Improved data availability management

Simplified data movement

See 4.4, “Benefits” on page 32 for more details.

Another very important benefit is that, with DFSMS, the DB2 environment is positioned to take immediate advantage of available and future enhancements. For example, the following enhancements are available today to DB2 with the appropriate level of DFSMS:

DFSMS 1.4

Space allocation failures are reduced with the support of a maximum number of 255 extents per component of VSAM data set for multivolume data sets (the limit is 123 data sets for a single volume allocation).

Image copy with concurrent copy support for RAMAC Virtual Array SnapShot.

DFSMS 1.5

Support for 254 table space or index space partitions or pieces up to 64 GB with the use of VSAM Extended Addressability for Linear Data Sets; also 4,000 TB support for LOBs.

© Copyright IBM Corp. 1999

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IBM 5695-DF1, 5655-DB2 manual Summary of Considerations, DB2 and Storage Management, Benefits of Dfsms

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.

IBM 5655-DB2 is a well-known relational database management system (RDBMS) that excels in managing large volumes of structured data. Its architecture is designed to support high availability, scalability, and performance, crucial for businesses operating in today’s data-driven world. Some of its main features include advanced indexing capabilities, support for complex queries, and dynamic workload management. Additionally, it provides strong concurrency controls, which enable multiple users to access and manipulate data simultaneously without compromising data integrity.

One of the key characteristics of DB2 is its support for various data types, including JSON and XML, making it versatile for modern applications that generate data in diverse formats. It also features robust security mechanisms to protect sensitive data, aligning with compliance standards across industries. Integration with analytics tools further allows businesses to derive insights from their data, enhancing decision-making processes.

On the other hand, IBM 5695-DF1, also known as the InfoSphere DataStage, is a powerful data integration tool that facilitates the extraction, transformation, and loading (ETL) of data from various sources to target systems. It empowers organizations to streamline their data flows, ensuring that clean, consistent information is available for analysis and operational use. Key features of 5695-DF1 include a user-friendly graphical interface that enhances developer productivity and a rich set of connectors for numerous data sources, enabling seamless data integration.

DataStage also supports real-time data integration, allowing businesses to keep their data synchronized across multiple platforms. Its parallel processing capabilities dedicatedly optimize performance, enabling organizations to handle vast datasets efficiently. It incorporates data quality tools that help in validating and cleansing data before it is used for decision-making processes.

Both IBM 5655-DB2 and 5695-DF1 are part of a broader strategy to accommodate the evolving landscape of data management. Businesses leverage these technologies to enhance their data architectures, fostering agility and competitive advantage in their respective markets. Their integration capabilities, along with a focus on security and scalability, position them as vital assets in modern enterprise environments. Whether managing critical data within a database or ensuring seamless data flow across systems, these IBM offerings provide a comprehensive approach to handling complex data challenges.