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IAM Overview | IAM/AIX | Features |
Benefits | User Experiences | Sample Vendor Products |
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Presentation 2004 |
SHARE Presentation
2006 | IAM
User Story | FYI Focus on IAM
 Batch
processing times are dramatically reduced by 50 to 80%.
IAM
files are not constrained by the 4.3GB file size limit of VSAM.
 IAM
files can exceed 20GB!
Does
not require users to make any modifications to their operating
system.
IAM
does not replace any operating system access methods.
IAM
is designed to coexist with VSAM.
IAM
with data compression takes less CPU time than VSAM.
Significantly
less than competing hardware & software compression products.
Support
for VSAM ESDS and KSDS data sets.
Compatible
with IBM's System Managed Storage (SMS).
Support
for SnapShot™ Copy on IBM's RVA devices.
Reduces
DASD space requirements by 30 to 70%
Improves
on-line and batch performance
Cuts CPU
utilization...of major applications
IAM reduced RMDS space requirements from 106,000 tracks
to less than 53,000 tracks.
Each day our VSAM file was getting close to 4GB. We
were left with some painful choices: split the file into 2 or 3 sub-files
requiring thousands of hours of programming changes and testing; purge
records leaving only the most current ones on the file; or, archive older
entries.
We converted our VSAM files to IAM without change. Now the file is over
20GB.
Replaced existing VSAM compression package with IAM
and saw a 50% savings in CPU time.
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