SCDBFAST

This Storage Class is intended for table spaces belonging to

 

applications requiring performance. It provides high performance

 

and good availability.

 

 

SCDBCRIT

This Storage Class is intended for table spaces belonging to

 

critical applications. It provides high performance and continuous

 

availability. SMS attempts to place these table spaces on disks

 

with dual copy or on RAID.

 

 

SCDBTEST

This Storage Class is intended for environments with lower

 

requirements. Examples are test systems, development systems,

 

and data warehouse environments. These table spaces will have

 

average performance and average availability.

 

Table 12. SMS Storage Classes for DB2 Databases

 

 

 

 

 

 

 

 

 

 

 

SCDBMED

SCDBFAST

SCDBCRIT

SCDBTEST

 

 

 

 

 

 

DIRECT RESPONSE (MSEC)

 

10

5

5

20

 

 

 

 

 

 

DIRECT BIAS

 

 

 

Yes

 

 

 

 

 

 

 

SEQUENTIAL RESPONSE (MSEC)

 

10

5

5

20

 

 

 

 

 

 

SEQUENTIAL BIAS

 

 

 

 

 

 

 

 

 

 

 

SUSTAINED DATA RATE (MB/sec)

 

10

20

20

10

 

 

 

 

 

 

AVAILABILITY a

 

Preferred

Preferred

Continuous

Standard

ACCESSIBILITY b

 

Standard

Standard

Standard

Standard

GUARANTEED SPACE

 

No

No

No

No

 

 

 

 

 

 

GUARANTEED SYNCHRONOUS WRITE

 

No

No

No

No

 

 

 

 

 

 

CACHE SET NAME

 

 

 

 

 

 

 

 

 

 

 

CF DIRECT WEIGHT

 

 

 

 

 

 

 

 

 

 

 

CF SEQUENTIAL WEIGHT

 

 

 

 

 

 

 

 

 

 

 

a. Continuous=Duplexed or RAID Disk, Preferred=Array Disk, Standard=Array or Simplex Disk

b. If a device with Concurrent Copy capability is desired, specify Continuous or Continuous Preferred

6.1.4 SMS Management Class

Table 13 on page 50 shows three examples of Management Classes for DB2 table spaces. The purpose of these three Management Classes is to allow different DFSMShsm specifications for DB2 table spaces and index spaces. These Management Classes are:

MCDB20

This Management Class is intended for production table spaces

 

and table spaces that require average or higher availability. This

 

Management Class inhibits DFSMShsm migration of table

 

spaces.

MCDB21

This Management Class is intended for table spaces that are

 

allowed to migrate. This Management Class causes migration

 

after one week of inactivity; and after two weeks in level 1, the

 

table space will migrate to level 2. For example, this Management

 

Class can be used for Data Warehouse table spaces.

Managing DB2 Databases with SMS 49

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IBM 5695-DF1, 5655-DB2 manual SMS Management Class
Page 70 Page 72

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.
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