Chapter 2. IBM 3745 Models 130, 150, and 170 Highlights
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Like the IBM 3745 models 210, 310, 410, and 610 the IBM 3745 models 130, 150,
and 170 contribute to improved availability, performance, usability, and connectivity
of the network. IBM 3745 models 130, 150, and 170 also provide a high degree of
reliability and an advantageous price/performance ratio.
Availability
The IBM 3745 models 130, 150, and 170 offers increased availability
characteristics. Some of them enhance the operational aspect of managing local or
remote controllers. Also, the LSI technology ensures higher reliability.
The main characteristics contributing to high availability are:
Hot pluggability, which allows the user to remove, add, or replace a LIC while
the 3745 is operational. Plugging or unplugging does not affect the other line
operation.
External cable plugging/unplugging by the user.
Concurrent diagnostics. Most components and subsystems can be diagnosed
while the 3745 continues to run.
Remote support facility.
The following capabilities also enhance the availability of the controller operation:
Scheduled power on.
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Concurrent and scheduled IPL in all network communication controller nodes
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(Timed IPL function)
Up to two control program load modules stored on the communication
controller's integrated hard disk. This allows fast and nondisruptive control
program loading.
One central control unit (CCU) dump module, also on the integrated hard disk.
This allows fast dumping after CCU failure.
Remote access to the maintenance and operator subsystem (MOSS).
Improved error messages and error checking and correction (ECC).
Performance
The system performance of a 3745 model 130, 150, or 170 is higher than for a
3720 or a 3725.
The main elements contributing to higher performance are:
Increased CCU performance: about 1.5 times the 3725; about 4 times the
3720.
"Cache" high-speed buffer (HSB) with a capacity of 32KB (KB equals
1024 bytes). This lets the transfer of instructions and data from main storage
match the CCU cycle time.
Main storage of 4 or 8MB (MB equals 1 048 576 bytes).
Copyright IBM Corp. 1989, 1991
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Summary of Contents for ThinkPad 130
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