block zeroing

The I/O Blender Part 2: What Does Virtualization Do?

May 24, 2012 By Stephen 7 Comments

Virtualization is a disruptive technology in every sense of the word. By abstracting and simplifying physical resources, virtualization enables dynamic utilization. But this â€œtranslationâ€ from physical to virtual disrupts the assumptions that enable performance and flexibility of physical devices such as storage arrays.

VMware VAAI Storage Array Support in Plain English

February 8, 2011 By Stephen 18 Comments

The most exciting enhancements in VMware vSphere 4.1 is the addition of vStorage API for Array Integration (VAAI). This new API allows VMware ESX to offload storage processing functions to capable storage arrays, reducing the workload on the server hardware in introducing new and exciting possibilities for performance and efficiency. VAAI in ESX 4.1 includes three separate capabilities: block zeroing, full copy, and hardware assisted locking.

Ranting and Raving About the 2018 iPad Pro

I remain enthusiastic about the iPad Pro, despite getting a scratched screen and my concerns about durability. It’s a worthy successor to the original and offers enough improvements that I’d recommend the upgrade for just about anyone who uses their iPad for serious work. It’s still not yet a laptop replacement, but this is due more to a lack of desktop-class software for iOS than anything in Apple’s control.

The 2018 iPad Pro is a Beast!

The third-generation iPad Pro is a great machine but also a bellwether of change at Apple. It will be very hard for the rest of the mobile and client computing industry to keep up with this kind of progress!

The Terrifying True Story Of Virtual Machine Mobility

December 22, 2011

Virtualization of server, network, and storage services illuminates the link between physical resources and functional applications. A running virtual machine can instantly move from one server, network adapter, HBA, or LUN to another. And when it happens, traditional components have no idea how to react.

My Visit to Bletchley Park

August 3, 2012

Bletchley Park is much more than a museum. For those interested in the history of computing, like me, or World War II buffs, it’s a must-see. The reconstructed Bombe and Colossus computer are truly breathtaking, and I find myself drawn to the stories of codebreaking that took place here. I highly recommend a visit!

Defining Failure: What Is MTTR, MTTF, and MTBF?

July 6, 2011

Most computer industry vendors use the term â€œMTBFâ€ rather indiscriminately. But IT pros know that systems do not magically repair themselves, at least not yet, so MTTR and MTTF are just as important!

Sony NEX-5 Camera Review

September 15, 2010

The world of photography is like so many others: A vast gulf separates the amateurs and enthusiasts, from equipment to nomenclature to skills. I am decidedly in the amateur camp when it comes to photography, but I recently upgraded to a new compact interchangeable-lense camera, the Sony alpha NEX-5. It is an excellent match for my needs, allowing me to expand my skills and explore more advanced photographic techniques without sacrificing portability and ease of use.

What More Could Alan Turing Have Accomplished?

October 7, 2012

Many of you have probably heard the name of Alan Turing, but most of those probably don’t appreciate the extent of his contributions. To say that he invented the modern world is an overstatement, but he did dream up the computers we see around us today, and helped win World War II in the process. But the story of Alan Turing is as much about exclusion and defeat as it is of genius.

10 Mysteries The Lost Finale Definitively Settled

May 25, 2010

The series finale of Lost didn’t settle every question, but it did settle many of the long-running questions raised by fans. Although my live viewing was frustratingly complicated by failed transmission equipment at ABC affiliate, WEWS, I was able to watch the entire episode thanks to iTunes. So let’s settle the things that can be settled regarding Lost.

How Smart Is the Mondaine Helvetica Smart Watch?

December 30, 2015

I love watches and technology, so I was thrilled to hear about the creation of a “horological smart watch” base by the Swiss watchmaking industry. One of the first examples of this new breed is the just-released Mondaine Helvetica Smart. I purchased one of these watches, the limited-edition “1 of 1957” variety, and have had a chance to evaluate it both as a watch and a gadget.

Donate Your Swag to School Kids In Need

July 28, 2010

Trade shows are a veritable swag-fest, some with great loot and some with junk. I’ve been critical of the booth babe and chotchkie phenomenon, but my friend Kevin Houston has a better suggestion: Donate your (useful) swag like backpacks and pens to school kids in need.