Lee LaFrese is a Senior Storage Performance Consultant at IntelliMagic. He has deep knowledge about z/OS and SAN storage architecture and is a recognized industry expert in storage performance modeling. His focus at IntelliMagic is to investigate thorny performance issues that customers may face and recommend practical solutions. He also shows customers how to use our products effectively, assists with capacity planning and works with developers to identify and implement new, high-value features and functions.

Lee is a frequent conference speaker and has written several entertaining blogs about storage performance. He holds eight storage related patents and before joining IntelliMagic he had a 30+ year career at IBM where he was the technical team lead for Enterprise Storage Performance.

Resources created by Lee LaFrese

Blog

Clogged Device Drain? Use Your Data Snake!

Have you ever run into high I/O response times that simply defy explanation and can’t find a reason why performance is degraded. It could be a classic “slow drain device” condition.

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Blog

The Circle of (Storage) Life

New storage technologies are quickly maturing and replacing legacy platforms. But will they be mature enough to meet your high availability, high performance IT infrastructure needs?

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Blog

Performance Virtual Reality – Seeking the Truth in Storage Benchmarks

Benchmarks are perceived as a great way to quantify ‘feeds and speeds’ of storage hardware but they can be deceptive.

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Blog

The Attack of the Disk Clones

While most mainframe shops have explored how to reduce mainframe software costs, we are finding significant latent savings opportunities still exist at even the best run sites.

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Blog

The Storage Management Initiative (SMI): the Good, the Bad, and the Ugly – Part 1 “The Good”

The notion of having a common mechanism to communicate with and report on storage devices is good for both us as a company that provides storage analytics software, and for our customers.

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Blog

Performance Modeling for Disk Storage Systems

This blog demonstrates how computer system performance modeling is done, specifically for disk storage systems. 

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Blog

Storage Management Initiative (SMI) and the Block Services Performance (BSP) sub-profile: the Good, the Bad, and the Ugly – Part 2 “The Bad”

While the technology chosen by the SMI program has significant benefits, it also has challenges.  

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Blog

Does everybody know what time it is? Tool Time!

IntelliMagic Vision is vendor neutral and handles storage from all the z/OS storage vendors with similar functionality.

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Blog

Do SSDs Make Storage Performance a Lost Art?

Although SSDs provide many benefits, IntelliMagic Vision can help find and eliminate performance risk in your storage environment.

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Blog

Obscured by Clouds – Why You Shouldn’t Outsource Data Storage to the Cloud

Cloud vendors are quick to tout the benefits of moving data storage to the cloud, but Lee LaFrese reminds us of the risks of outsourcing data storage to the cloud.

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Blog

Today’s Forecast: Cloudy with a Chance of Sudden Alert Storms

IntelliMagic Vision provides deep insight and analysis tools to help avoid getting overloaded with meaningless alerts.

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Blog

What Enterprise Storage system vendors won’t tell you about SSDs

IntelliMagic Vision provides you with the tools to keep a careful eye on the performance of your Enterprise Storage arrays including any SSDs that may be installed.

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Blog

Anatomy of an Anomaly – Finding the Root Cause of a CONNECT Time Increase

Recently a situation occurred at one of our cloud services customers that was a real head-scratcher. One of the disk storage systems saw a sudden jump in CONNECT time. What had changed?

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Blog

The Perils of Complacency with Enterprise Storage Systems

Over the last few years, Enterprise Storage Systems have advanced so much that it seems that they have nearly unlimited performance and resiliency. However, becoming complacent with your storage performance is fraught with peril.

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Blog

How Far Behind is My Asynchronous Replication?

Most peer-to-peer replication methodologies prioritize application performance over replication currency, but if replication falls too far behind you need to find out about it quickly and know what should be done to fix it.

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Blog

Estimating Storage System Capabilities Should not be a Risky Business!

If you want a useful headroom metric you need to define it properly.

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Video

Global Mirror RPO Spikes

This video will show you how IntelliMagic Vision can be used to provide visibility to the status of Global Mirror replication in a Globally Disbursed Parallel Sysplex environment.

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Video

High z/OS Disk Connect Time

By drilling down to specific volumes and consulting change logs, it is easy to determine the root cause of high z/OS Connect time as coming from a newly released SQL query.

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Video

How Can I Tell if My Back-End Drives Are Overloaded?

This case study shows how IntelliMagic Vision may be used to easily find the root cause of a z/OS performance issue related to overloaded back-end drives.

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