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Stephen Foskett, Pack Rat

Understanding the accumulation of data

You are here: Home / Archives for latency

latency

Predictable Performance Beats Maximum Speed Any Day

February 18, 2015 By Stephen 1 Comment

Everyone wants to be the best, so outrageous claims of supremacy are as old as time. In IT, these claims often revolve around synthetic benchmarks chosen to highlight a system's performance. Buyers have grown wary of these claims, smartly asking to try before they buy. But predictability is even more important than real-world testing, and this is particularly difficult for … [Read more...] about Predictable Performance Beats Maximum Speed Any Day

The Four Horsemen of Storage System Performance: The Rule of Spindles

August 25, 2010 By Stephen 9 Comments

Why do some data storage solutions perform better than others? What tradeoffs are made for economy and how do they affect the system as a whole? These questions can be puzzling, but there are core truths that are difficult to avoid. Mechanical disk drives can only move a certain amount of data. RAM caching can improve performance, but only until it runs out. I/O channels can be … [Read more...] about The Four Horsemen of Storage System Performance: The Rule of Spindles

PowerPath To The Virtual People

April 22, 2009 By Stephen 5 Comments

Hiding in the shadow of the huge VMware vSphere 4 announcement was a very interesting introduction by EMC: PowerPath/VE. As I mentioned in my post on storage changes in vSphere 4, PowerPath/VE plugs into the new pluggable storage architecture (PSA) found in vSphere 4 versions of ESX and takes over the decision-making and heavy-lifting tasks related to communicating with storage … [Read more...] about PowerPath To The Virtual People

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