M-Pact
combines two powerful BIMoyle tools, BIMCMPRS and PACK, to create
a complete disk storage and compression package.
Conversion Info
 BIMCMPRS
BIMCMPRS
is a program product used to compress 3270 CRT or printer output
data streams. This reduces response time and reduces contention
among terminals on the same network. BIMCMPRS functions by removing
repetitive characters from the data stream and rebuilding the screen
(or printer) buffer so that the 3270 will construct the intended
image at the terminal. An optional feature, called "inbound
compression," may be used to further reduce transmission by
suppressing characters known to already be on a CRT screen. Transmission
reduction typically varies between 15 and 75 percent, depending
on application programs and data entered by terminal operators.
Response time improvement depends on the reduction amount and the
network speed.
BIMCMPRS is supplied with a CRT transaction which is used to
display statistics on the compression effectiveness. The transaction
displays terminal I/O counts, character totals before and after
compression, and calculates compression percentage, for all local
terminals collectively, all remote terminals, and for each individual
terminal. BIMCMPRS supports all telecommunication protocols (BTAM,
TCAM, VTAM) under VSE.
BIM-PACK
BIM-PACK addresses one of the major problems of today's computer
installations, disk storage. With the ever increasing demands to
keep more and more data on-line, computer installations are faced
with the need to continually install more disk storage devices
with even greater storage density and capacity. This situation
leads to the inevitable problems of the cost of more disk drives,
floor space for the new disk drives and controllers, air-conditioning
upgrades, and the scheduling of long running backup jobs with their
ever increasing number of magnetic tape reels. If you use VSAM
and are not using BIM-PACK you are probably wasting valuable disk
space. Many installations have files that contain records where
a only a small amount of the record is used, giving rise to large
areas of unused space, and records not being efficiently blocked
into VSAM Control Intervals and accordingly Control Areas.
BIM-PACK addresses these problems for Entry- and Key-Sequenced
VSAM files by allowing the user to compress the data on selected
files, and thus reduce the amount of space required to hold such
files.
The amount which can be saved by compression depends on the contents
and layout of the user's records, and the degree of compression
chosen by the user. Compression of more than 70% has been achieved
by BIM-PACK's sophisticated algorithms.
BIM-PACK includes a file analysis program which can be run against
selected files to establish the potential compression ratio, and
thus the value, of using BIM-PACK for the file and the site generally.
BIM-PACK is fully transparent to programmers, operators, and application
programs. Selected files are re-DEFINED and reloaded, after which
the compression process is automatic and invisible.
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Conversion Info:
M-Pact Replaces:
EXTEND/DASD VSAM Compression for VSE
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