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GC20-173o-0
Revised
7/14/70
By TNL GN20-2227
can improve I/O throughput by making more efficient use of channel
time.
These direct access facilities also offer higher availability
through use of advanced hardware-only and program-assisted error
correction features.
The 3330 facility provides. high capacity and fast access for less
cost per bit.
It is a growth device for the 2314 facility and the
2321 Data Cell Drive that offers increased price performance.
The
3330 facility is designed to be used in every area in which direct
access storage is needed, for example:
• As a system residence device and for program library storage
• In teleprocessing applications for message queuing and residence
of online applications data
• In online, data-based applications, such as management information
systems, airline reservat.ions, etc.
• In time-sharing (or interactive) environments as a swap device and
for online work storage (for program and data residence)
• As high-speed work storage for sorting, assembling, and link editing
• For residence of data indexes, such as for ISAM data sets
The 2305 facilities offer larger capacity and faster access than
the 2301 drum.
For Model 165 users, the 2305 facilities can contribute
significantly to system throughput improvements when used:
• As system residence devices
• In time-sharing environments, as a swap device and for program and
data residence
• As high-speed work storage and for residence of data indexes
SUMMARY
The combination of new and improved hardware and input/output
facilities, enhanced operating systems support, integrated emulation,
and increased system availability provided by the Model 165 offers
Model 65 and 75 users expanded computing capabilities without the
necessity of a large conversion effort.
Little or no time need be
spent modifying operational System/360 code or 7000-series programs
currently being emulated.
Existing CPU-bound programs can execute
faster because of the increased internal performance of the Model 165,
while I/O-bound programs can benefit from the use of more storage,
more channels, faster I/O devices, and block multiplexing.
The increased power and new functions of the Model 165 provide the
base for expanded applications growth and penetration of previously
marginal application areas.
The increased price performance of the
Model 165 offers the user the opportunity to widen his data processing
base for comparatively less cost and the Model 165 can be an integral
part of a growth plan to the higher performance Model 195.
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