Mainframe Computer:-
Mainframe computer likes as a big centralized machine that contains the vast amount of memory, huge storage space, multiple high grade processors, so it has ultra-processing power compare to standard computer system. So, mainframe computer system’s importance is increasing for large scale organization, scientific research, consumer statistics, and census data, because it is capable to execute multiple complex programs concurrently at the ultra-speed. Most eminent vendors of mainframe computers are IBM, Hitachi, etc.
Example:- UNIVAC I (UNIVersal Automatic Computer I) mainframe computers was first developed by J. Presper Eckert and John Mauchly in USA, in 1951.
Characteristics of Mainframe Computer
· Mainframe computer allows to process huge amount of data simultaneously without getting any malicious attacks.
· Mainframe computers are more popular due to their long life performance, because it can run smoothly up to 50 years after its proper installation.
· Mainframe application programs get outstanding performance due to their large scaled memory management.
· Mainframe computer systems are capable to share their over workload on the other multiple processors and I/O terminals, and due to this process enhances its performance.
· Mainframe systems have ability to manage different complicated operating systems such as UNIX, VMS, and other IBM O/S like as Z/OS, Z/VM.
· Mainframe systems have less probability in getting any errors, and bugs during processing time. If any time, some errors tries to enter in the system then they are able to remove them.
· Mainframe systems are designed to support “Tightly Coupled Clustering Technology”, due to this feature; it can manage approximate 32 systems along with single system image. If system gets fails due to any hardware component damage then running tasks could be shifted to other live system, and any data do not corrupt in this entire process.
· Mainframe system is eligible to support maximum Input/output devices.
· Mainframe system is able to execute multiple programs concurrently.
· In mainframe system, virtual storage system can be used.
· It can generate I/O bandwidth in large amount.
· It supports to Zero fault tolerant computing system.
· It is capable to manage several users.
· It can also support centralized computing system.
Advantages of Mainframe Computer
Ultra Computing Power
Mainframe computer is capable to process huge data and run complicated applications with ultra computing speed.
Scale-ability
Mainframe computer can support to extra big power processors, and it can be expended with adding multiple ultra power processors, memory, and storage device when to require of processing huge data concurrently.
Virtualization System
With using its Virtualization property, Mainframe computer system can be divided into small logical segments for eliminating the memory limitation, and we can great computing performance.
Reliability
Mainframe computer system is able to identify their errors and bugs, and it can self recover of them without any other embedded resources. Today, Modern mainframe computer systems are capable to run frequently for 40 to 50 years without getting any errors.
Self-Serviceability
If, mainframe computer system gets errors during processing time then it is capable to fix them without degrading its performance in short duration.
Protection
Mostly, mainframe computer are used by large scale organizations because they need to secure their confidential data. So, mainframe computer system allows to more attention on authentication protection for storing data.
Flexible Customization
Mainframe computer system’s Customization is performed as per the client’s requirement. Mainframe computer can support multiple operating systems at same time.
Mainframe computer systems are getting more popularity due to their long lasting performance (up to 40 years).
Mainframe computer system can support millions of transactions per second.
It can control the millions of users and applications concurrently.
Disadvantages of Mainframe Computer
- Mainframe systems are very expensive, and these types of computer cannot be used in the home. Due to its more processing power, they are used by large scale companies, banks, and other government sectors.
- In mainframe computer system, we can use the normal operating system such as Windows and Android. In mainframe system is used the custom operating system and hardware as the client need, and they are more costly.
- Mainframe computer system requires the more space and less temperature.
- If, any errors or bugs are occurred while performing the massive task, then need the well trained staff for eliminating the errors.
- Entire system can gets down due to major damage of hardware component’s system.
- Difficult to read its instructions which are used on the command based interface.
- It Consume more resources.
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