Case Studies / Insurance
Insurance · MainframeThe 6-hour mainframe job that now finishes in under two.
Parallelizing a single-threaded VSAM mass-copy on z/OS — without replacing a single mainframe component.
70%
Faster processing
40%
Lower MIPS
$300k/yr
Saved
The ClientA leading US Property & Casualty insurer running core policy systems on IBM z/OS.
01
The Challenge
The production-to-test policy copy ran 6–8 hours, single-threaded — while MIPS costs climbed and QA waited.
✕6–8 hour copy window delayed every test refresh
✕Excessive MIPS consumption drove rising 2024 costs
✕SLA risk on downstream QA and release cycles
02
What We Built
A split-and-parallelize redesign of the copy pipeline — piloted on 10,000 records before full rollout, delivered in four months.
✓Easytrieve partitioning of input policy datasets into 25 files
✓25 parallel SYNCSORT copy jobs, merged into consolidated VSAM
✓JCL optimization and CA7 scheduling integration
03
The Stack
COBOLJCLEasytrieveREXXVSAMDB2IMS DBSYNCSORTCA7FILE-AID
04
The Results
Numbers from production operation — not projections.
70%
Faster copy (6–8 hrs → under 2)
40%
MIPS reduction
$300k
Saved annually
30%
Faster QA cycles (5 days → 3.5)
MORE
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