I/O Devices; 20:05 I/O Device Support; 3330 Disk Storage And 3830 Storage Control - IBM System/370 Manual

SECTION 20: I/O DEVICES
20:05 I/O DEVICE SUPPORT
Most presently announced I/O devices that can be attached to
System/360 Models 65 and above can be attached to the System/370 Model
165. The following I/O devices are not included in a standard Model
165 configuration:
1017
1018
1052
1231
1259
1285
1404
1412
1418
1428
1445
1827
2302
2415
2671
7340
7772
Paper Tape Reader
Paper Tape Punch
Printer-Keyboard, Models 3, 5, 6, and 8
Optical Mark Page Reader
Magnetic Character Reader
Optical Reader
Printer
Magnetic Character Reader
Optical Character Reader
Alphameric Optical Reader
Printer
Data Control unit (for attachment of 1800 system analog
and/or digital control units to the Model 165)
Disk Storage
Magnetic Tape Unit and Control
Paper Tape Reader
Hypertape Drive
Audio Response Unit
New I/O devices for the Model 165 are:
• The 3330 facility - attaches only to a block multiplexer channel
• The 2305 facility Models 1 and 2 - attaches only to a block
multiplexer channel
• The 3211 Printer - attaches to any Model 165 channel
The 3330 and the 2305 facilities represent significant advancements
in direct access device technology. They provide greater online data
capacity and faster data rates and access than heretofore, as well
as expanded error correction features. Both have rotational position
sensing and multiple requesting as standard features.
The 3330 represents the latest generation of direct access device
with removable, interchangeable disk packs. The 2305 facility is a
major extension of the nonremovable, high-speed, fixed-head direct
access storage concept.
The major new characteristics of the 3330 and 2305 facilities and
the 3211 Printer are discussed in the following subsections.
20:10 3330 DISK STORAGE AND 3830 STORAGE CONTROL
The 3330 facility is a modular, large-capacity, high-performance
direct access storage subsystem. The 3330 facility consists of 3830
Storage Control and from one to four 3330 Disk Storage modules. A
3330 module contains a pair of independent disk storage drives as shown
in Figure 20.10.1. The new, removable 3336 Disk Pack is used for data
storage.
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