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Jeffrey Layton Author Archives - Page

Enterprise SSDs and Storage Design

December 1, 2016
Enterprise SSDs give us lots of freedom in storage design, but is this a blessing or a curse?
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Have Hard Drives Jumped the Shark?

February 23, 2016
Spinning disk media will be around for a while longer, but it looks like their days are numbered.
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Object Storage vs. POSIX Storage: Something in the Middle, Please

August 19, 2015
In this corner, object storage. In this corner, POSIX storage. Why can't they meet in the middle?
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Flash is the New Flash

April 22, 2015
Flash technology as it exists has some limitations, yet the cost per gigabyte continues to improve. How is this possible?
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Shingled Drives for Re-Roofing Your Storage?

February 11, 2015
In an effort to increase drive capacity, manufacturers have created a new type of hard drive called a Shingled Magnetic Recording (SMR).
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SAS vs SATA

June 24, 2014
The SAS vs. SATA debate is often framed as the “price favorite” vs. the “enterprise favorite.” Here’s an in in-depth look at the issue.
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Shared Storage in the Cloud

March 26, 2014
While the technology is still in its infancy, there are several options for creating shared storage in the cloud for HPC workloads.
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IO Patterns—What you don't know can hurt you

July 19, 2013
Understanding the IO patterns of your applications is good for end users and good for vendors.
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The Top of the Big Data Stack: Hadoop, MapReduce, and Analytics

August 9, 2012
This final look at the top of the stack discusses the role of Hadoop in Big Data and how this all ties into analytical tools Mapreduce and R.
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The Top of the Big Data Stack: Database Applications

July 27, 2012
There are eight types of database applications for Big Data. Learn what they are and what they mean for data storage.
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The Top of the Big Data Stack: Applications Classification and Data Storage

July 10, 2012
Big Data is everywhere, but what really is it? We define it and discuss how to get 'data' into 'Big Data.'
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Linux File System -- Analyzing the Fsck Test Results

March 12, 2012
The results of our Linux fsck testing were posted last month. Now it's time to address the big questions that remain: What do the results tell us, what do they mean, and is the performance expected?
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Linux File System Fsck Testing -- The Results Are In

February 2, 2012
Our Linux file system Fsck testing is finally complete. Just how bad is the Linux file system scaling problem?
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The Future of Storage: Devices and Tiering Software

July 28, 2011
The only constant about storage technology is the fact that it is constantly changing. But where is it headed? Storage devices and tiering software are two areas ripe for speculation.
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Test Plan for Linux File System Fsck Testing

June 17, 2011
Our examination of the ever-growing Linux file system scaling problem continues. In part 2 of our State of File Systems Technology series, Jeff Layton describes the approach and specs to be used in running  the fsck wall clock time  benchmark/test.
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Real-Time Data Compression's Impact on SSD Throughput Capability

April 12, 2011
SandForce controllers are found in a wide range of SSDs. The most interesting and unique feature of SandForce SSD controllers is that they use real-time data compression to improve performance and SSD longevity. The impact, however, depends on the compressibility of the data.
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Data is Becoming Colder

January 19, 2011
Do you have data that you haven't touched in a long time? Some fairly recent studies have shown that data is getting colder.
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Fixing SSD Performance Degradation, Part 2

December 2, 2010
In part two of his look at solid state disk performance degradation, Jeff Layton puts an enterprise SSD through its paces to understand its performance characteristics before, during and after heavy use.
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Fixing SSD Performance Degradation, Part 1

October 28, 2010
In part one of this two-part look at SSDs, Jeff Layton examines why SSD performance degrades over time and offers some potential solutions to the problem.
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