Introduction to the New Mainframe: Large-Scale Commercial Computing

66 Introduction to the New Mainframe: Large-Scale Commercial Computing

4.1 Introduction to integrity

One of the ways the z/OS operating system provides data integrity is through

Data Facility Storage Management Subsystem (DFSMS), which helps to

automate and centralize the management of storage. To manage storage,

DFSMS, also called SMS (for Storage Management Subsystem), provides the

storage administrator with control over

data class, storage class, management

class, storage group,

and automatic class selection routine definitions.

In this chapter we first discuss the ways in which z/OS contributes to the integrity

of the data that it processes and the facilities it provides for frequent backups,

auditing access to data, and logging changes ...