Home computers perform complex and critical calculations in large corporations and governments around the world. The mainframe machines are fast, intelligent and capable of the advanced computing necessary for our generation of IT infrastructure and business objectives.
The emergence of new computer technologies has not reduced demand for mainframes because they offer unique advantages.
Let's look at the features that make mainframes a favorite computing platform, as well as some of their disadvantages.
Benefits of mainframe computing
High level computing: One of the main features of mainframes is their ability to process data and execute applications at large speed. Business computing requires high throughput I / O, more than the raw computing speed. Mainframes deliver it efficiently. In addition, since business computing also requires high-bandwidth connections, the mainframe design balances I / O performance and bandwidth.
Increased processing power: Mainframes are supported by a large number of high-power processors. In addition, unlike other computers, mainframes delegate I / O to hundreds of processors, limiting the main processor to processing the application only. This feature is unique to mainframes and makes them superior in processing.
Virtualization: A mainframe system can be divided into logical partitions (LPARs, also called virtual machines). Each logical partition can run a server. Thus, a single mainframe machine can do the job of a "server farm" that employs dozens of servers built on another platform. Because all these virtual machines run on a single processor in a single box, mainframes effectively eliminate the need for many other devices.
Reliability, Availability, and Serviceability (RAS): RAS features of a computer have often been the most important factors in data processing. The mainframes have RAS features that are both hardware and software efficient.
Mainframe systems are reliable because they can automatically detect, report, and recover from system problems. In addition, they can recover without disrupting the entire work system, thus keeping most applications available.
The ease of maintenance of mainframes means that they make it easier to detect and diagnose problems, making it easier to solve problems in a short time.
• Security: Because mainframes are designed specifically for large organizations where data confidentiality is essential, mainframes have extensive capabilities to store and protect data securely. They provide secure systems for a large number of applications that all access confidential data. Mainframe security often integrates multiple security and monitoring services: user authentication, auditing, access control, and firewalls.
• Top of the range scalability: The scalability of an IT platform lies in its ability to function. added. Mainframes are known for their scalability, both hardware and software. They easily perform multiple tasks of varying complexity.
• Continued Compatibility: Continuous compatibility is one of the popular features of mainframes. They support applications of various ages. Mainframes have been updated several times and continue to work with many old, new and emerging software combinations.
• Sustainable performance: mainframes are known for their long-lasting performance. Once installed, mainframe systems work for years and years without major problems or downtime.
Disadvantages of mainframe computing
One of the major drawbacks of mainframes is their cost. Hardware and software for mainframes are clearly expensive. However, compared to the cost of other routes to security, IT management, virtualization, etc., the cost of mainframes is significantly lower.
Second, mainframe hardware takes up more space than other computers. This large space could be a constraint for small establishments. But this problem is not so bad as it once was. Compared to previous machines, today 's mainframes are small.
Finally, high-end skills are required to work with mainframes. You can not use a mainframe environment without specific training. However, as a competent administrator can serve a large number of mainframe users, the use of mainframes significantly reduces people costs and thus offers a significant benefit in terms of staffing.