【Toshiba】 TP90/70

This was the top-end model of the TP90 Series, first marketed in 1990 by Toshiba. It was targeted at the market for central computers in firms and organizations. The lower-end models of the TP90 Series (the TP90/20, 30, 40, 50 and 60) were first marketed in 1991, thus consolidating the overall lineup.

The TP90 Series was developed based on the central concept of "co-operated distributed processing" -- where each of the computers distributed in a network took a part of the work and co-operated with others. The main features of the TP90 Series were as follows:

(1) Coverage of a wide performance range with a single architecture
The TP90 Series was a set of higher-end versions of the V-7000 Series and employed a single architecture, but the series achieved performance 13 times that of the V-7030 (a low-end model of the V-7000 Series) by, for example, increasing CPU speed and providing symmetrical multi- processor support. The series also achieved a performance range of 50 times by using a cluster configuration called add-on enhancement,
(2) Field upgrading
Staged expansion of hardware, to accommodate greater work volume or increased database capacity, could be done at the user operations site. Up to a maximum of 3 CPUs could be incorporated in the same cabinet, as before, and up to a maximum 4 computer main units could be configured in a cluster (called "add-on enhancement" in the TP90 Series).
(3) High reliability
Duplicated configuration (automatic degradation of multi-CPUs, and duplication of disk drives and access buses)
Automatic degradation of main memory
Fail-over capability based on add-on enhancement
Integrity of databases and files using journal recovery
(4) Inherited network capabilities of V-7000
Support for 130 communication protocols including OSI
Distributed processing using VNET
(5) Distributed OLTP
The series provided support for "distributed OLTP" functionality which enabled transaction processing by dynamically linking screen processing on a client computer (optimally designed for the end user) with transaction processing on a server, without making the user aware of the network or database. Distributed OLTP allowed distributed database access using two-phase commit.
(6) State-of-the-art semiconductor technology for high performance
The CPU employed newly developed CMOS LSI with 3-layer aluminum wiring and an effective capacity of 100,000 gates.

The TP90/70 series was comprised of 3 models -- the TP90/73, TP90/75 and TP90/77. The main specifications were as follows:

  TP90/73 TP90/75 TP90/77
Main unit Number of CPUs 1 2 3
Add-on configuration Possible
Memory Capacity (MB) 8-88
Auxiliary memory units FDD (Built-in) Basic equipment: 1MB/3.5", Expansion: 1MB/5"
FDD (External) Max. 64 drives (1MB 3.5"/5"/8")
Magnetic disk unit 0.7GB-22.4GB
Magnetic tape unit Open reel: Start-stop type, PE/GCR, 1600/6250bpi, 200ips
Open reel: Streamer type, PE/GCR, 1600/6250bpi, 100ips
Cartridge: Streamer type, GCR, 6250bpi, 120ips, 300MB
Semiconductor file Max. 256MB
Optic disk drive 5GB, Max. 12 drives, with auto changer
"Integrated file" system Connectable
Workstations Display type J-5010, J-5010L, J-5080, J-3100 Series, J-330 Series
OCR type OCR-V595,V3050,V3030,V3010
Maximum number connected 512
Input/Output equipment Line printer Line printer: 800LPM
Kanji line printer:200LPM/360LPM
Page printer:20PPM,1250LPM/3000LPM
Kanji serial printer:100CPS/125CPS/135CPS
Image scanner Transport type: 200dpi/400dpi, Max. A1
Static type: 400dpi/300dpi/240dpi, A4/A5/B5
Communication lines Max. 192
Other Facsimile communication control etc.

TOSHIBA TP90/70 Model