StarTool IOO

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I/O performance enhancer. Dynamically tunes I/O requests to improve I/O performance, transparent to applications and other dataset users. Features include:

• Dynamic VSAM LSR
• Sequential dataset optimization
• Automatic reblocking to optimal values
• Dynamic QSAM and BSAM buffer management

First released as Ultimizer. Later renamed to StarTool IOO. Acquired by Micro Focus from its aquisition of Serena in 2016. Acquired by OpenText from its acquisition of MicroFocus in 2023, and by Rocket Software from its acquisition of OpenText's Application Modernization and Connectivity (AMC) business in 2024.