Harry Yudenfriend

Mr. Yudenfriend is an IBM Fellow for storage development and mainframe I/O technology. He received a B.S. degree in computer science from the Columbia University School of Engineering and Applied Science in 1980. He subsequently joined IBM at the IBM Poughkeepsie Development Laboratory, where he began working on mainframe I/O technology. Mr. Yudenfriend joined the IBM storage development team in 2014. He is an author or co-author of over 100 patents and 5 technical papers. Mr. Yudenfriend is a member of the ACM (Association for Computing Machinery) and an affiliate member of the IEEE (Institute of Electrical and Electronics Engineers).

Posts from this devCenter

Fibre Channel SAN Management for z/OS, IBM Z and DS8000

Executive Summary The I/O Operations (I/O Ops) component of System Automation for z/OS (SAFOS) has been used by z/OS clients to manage the FICON I/O...

Protecting z/OS from Faulty SAN Storage Links

Executive Summary IBM recommends that clients exploit the “Improved Channel Path Recovery” (ICR) function , first delivered in z/OS 1.13 (2011), to quickly fence failing...

New IBM Journal of R&D Article: zHyperLink: Low-latency I/O for Db2 on IBM Z and DS8880 storage

The IBM Journal of Research and Development just published an issue dedicated to the IBM z14, IBM’s latest generation of mainframe. The IBM DS8880 Storage...

zHyperLink™ Video Demo

On December 8, 2017, IBM made the DS8886 zHyperLink support generally available. Today’s blog entry introduces a video demo of the zHyperLink technology. Story Board...

DS8880 Enables IMS™ Release 15 to Reduce WADS I/O Service Time by up to 50%

Tariq Hanif Harry Yudenfriend Logging speed is a bottleneck for IMS performance, and the WADS I/O has been a bottleneck on logging speed. The enhancements...

DS8000 Leadership with zHyperLinks for IBM Z and the z14

Here is a new article describing the benefits of the DS8000 zHyperLink technology for IBM Z and the z14. DS8000 zHyperLinks for IBM Z and...

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