IBM 4300 series
Encyclopedia
The IBM 4300 series of computer
s were mid-range systems, various models of which were sold from 1979 through 1992. The systems were compatible with the System/370
architecture. They featured modest electrical and cooling requirements, and thus did not require a data center
environment.
Each model number was available in various sub-models, such as the 4341 model 1 (or 4341-1) and 4341 model 2 (4341-2).
The 4381-13 through 4381-24 (announced in 1987) were entry-level machines for the 370/XA architecture. They were positioned between the IBM 9370 and IBM 3090 in performance at the time of announcement.
The 4381-3, 4381-14, 4381-24 and 4381-92 were dual-CPU
models. Other models included 1, 2, 11, 12, 13, 21, 22, 23, 90 and 91.
Computer
A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem...
s were mid-range systems, various models of which were sold from 1979 through 1992. The systems were compatible with the System/370
System/370
The IBM System/370 was a model range of IBM mainframes announced on June 30, 1970 as the successors to the System/360 family. The series maintained backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the...
architecture. They featured modest electrical and cooling requirements, and thus did not require a data center
Data center
A data center is a facility used to house computer systems and associated components, such as telecommunications and storage systems...
environment.
Each model number was available in various sub-models, such as the 4341 model 1 (or 4341-1) and 4341 model 2 (4341-2).
The 4381-13 through 4381-24 (announced in 1987) were entry-level machines for the 370/XA architecture. They were positioned between the IBM 9370 and IBM 3090 in performance at the time of announcement.
The 4381-3, 4381-14, 4381-24 and 4381-92 were dual-CPU
Symmetric multiprocessing
In computing, symmetric multiprocessing involves a multiprocessor computer hardware architecture where two or more identical processors are connected to a single shared main memory and are controlled by a single OS instance. Most common multiprocessor systems today use an SMP architecture...
models. Other models included 1, 2, 11, 12, 13, 21, 22, 23, 90 and 91.
| Model | Announced | Withdrawn | Max Memory | Approximate Performance |
|---|---|---|---|---|
| 4331 | 1979 | 1981 | 8MB | 4 × 370/115 |
| 4341 | 1979 | 1986 | 16MB | 3.2 × 370/158 |
| 4361 | 1983 | 1987 | 12MB | 3 × 4331 |
| 4381 | 1983 | 1992 | 64MB | 9 × 4341 |