|
|
|
Problem Management Although problem management can affect different areas within computer services, it is most often encountered in dealing with hardware. This control process reports, tracks, and resolves problems affecting computer services. Management should be structured to measure the number and types of problems against predetermined service levels for the area in which the problem occurs. This area of management has three major objectives:
Problems can be organized according to the types of problems that occur, enabling management to better focus on and control problems and thereby providing more meaningful measurement. Examples of the problem types include:
All functions in the organization that are affected by these problems should be included in the control process (e.g., operations, system planning, network control, and systems programming). Problem management should investigate any deviations from standards, unusual or unexplained occurrences, unscheduled initial program loads, or other abnormal conditions. Each is examined in the following sections. Deviations from Standards Every organization should have standards against which computing service levels are measured. These may be as simple as the number of hours a specific CPU is available during a fixed period of time. Any problem that affects the availability of this CPU should be quantified into time and deducted from the available service time. The resulting total provides a new, lower service level. This can be compared with the desired service level to determine the deviation. Unusual or Unexplained Occurrences Occasionally, problems cannot be readily understood or explained. They may be sporadic or appear to be random; whatever the specifics, they must be investigated and carefully analyzed for clues to their source. In addition, they must be quantified and grouped, even if in an Unexplained category. Frequently, these types of problems recur over a period of time or in similar circumstances, and patterns begin to develop that eventually lead to solutions. Unscheduled Initial Program Loads The primary reason a site undergoes an unscheduled initial program load (IPL) is that a problem has occurred. Some portion of the hardware may be malfunctioning and therefore slowing down, or software may be in an error condition from which it cannot recover. Whatever the reason, an occasional system queue must be cleared, hardware and software cleansed and an IPL undertaken. This should be reported in the problem management system and tracked. Other Abnormal Conditions In addition to the preceding problems, such events as performance degradation, intermittent or unusual software failures, and incorrect systems software problems may occur. All should be tracked. Problem Resolution Problems should always be categorized and ranked in terms of their severity. This enables responsible personnel to concentrate their energies on solving those problems that are considered most severe, leaving those of lesser importance for a more convenient time. When a problem can be solved, a test may be conducted to confirm problem resolution. Often, however, problems cannot be easily solved or tested. In these instances, a more subjective approach may be appropriate. For example, management may decide that if the problem does not recur within a predetermined number of days, the problem can be considered closed. Another way to close such problems is to reach a major milestone (e.g., completing the organization’s year-end processing) without a recurrence of the problem. SUMMARY Operations security and control is an extremely important aspect of an organization’s total information security program. The security program must continuously protect the organization’s information resources within data center constraints. However, information security is only one aspect of the organization’s overall functions. Therefore, it is imperative that control remain in balance with the organization’s business, allowing the business to function as productively as possible. This balance is attained by focusing on the various aspects that make information security not only effective but as simple and transparent as possible. Some elements of the security program are basic requirements. For example, general controls must be formulated, types of system use must be tracked, and violations must be tracked in any system. In addition, use of adequate control processes for manual procedures must be in place and monitored to ensure that availability and security needs are met for software, hardware, and personnel. Most important, whether the organization is designing and installing a new program or controlling an ongoing system, information security must always remain an integral part of the business and be addressed as such, thus affording an adequate and reasonable level of control based on the needs of the business.
|