SATP

VMware PSP and SATP in Plain English

June 6, 2011 by Stephen 4 Comments

I am often questioned during my Storage for Virtual Environments seminar presentations about VMware’s Pluggable Storage Architecture (PSA). This system is fairly straightforward and concept: VMware provides native multipathing support for a variety of storage arrays, and allows third parties to substitute their own plug-ins at various points in the stack. But the profusion of acronyms and third-party options makes it difficult for end-users to figure out what is going on.

Storage Changes in the VMware vSphere 4 Family

April 21, 2009 by Stephen 6 Comments

VMware officially launched their next-generation (version 4) enterprise family of products today under the “vSphere 4” name. As I’ve been doing for the last few major ESX releases, I’m focusing this post on the storage changes present in vSphere 4.

GPS Time Rollover Failures Keep Happening (But They’re Almost Done)

This is week “1111111111” in the GPS system. Tomorrow morning it will roll over to week “0000000000”. How well will various systems handle this change? Not well, judging by what we’ve seen so far!

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.

Making a Case For (and Against) Software-Defined Storage

January 9, 2014

Everyone is talking about â€œsoftware-definedâ€ everything lately, so it was only a matter of time before industry buzz turned to software-defined storage. VMware and EMC really stoked the flames with a constant barrage of marketing directed in this direction. But how exactly do you software-define storage? And what does this mean?

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!

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.

How to Get Me to Write about Your Company or Product

March 15, 2012

Blog posts are really, really important for PR and awareness these days. And posts on independent sites like this one are critical to get awareness and search engine ranking. I get dozens of requests every week from companies wanting me to write about them. So I thought it would be a good idea to lay out exactly what it takes!

It’s Fine To Mount Hard Drives On Their Side Or Even Upside-Down

August 13, 2016

Have you ever wondered if mounting a hard disk drive on its side or even upside-down affects its lifespan or reliability? According to every drive manufacturer, it’s perfectly acceptable to mount a hard disk drive in any orientation as long as it’s not tilted and has sufficient cooling.

Edward Snowden Is Right: We Must Protect The Internet

March 19, 2014

Edward Snowden, NSA whistleblower, appeared at TED2014. His video, embedded below, must be watched. You may think he’s a hero or you may think he’s a villain, but he’s unequivocally right about one thing: We must protect the integrity of the Internet and online communications or we risk disrupting the world economy and all of our lives.

How Will Cisco Recover From The Consumer Strategy Blunder?

January 2, 2013

Cisco made a massive strategic blunder in the last decade, aggressively moving into consumer devices rather than focusing on their core enterprise and service provider markets. It seems that Cisco is now in the process of rectifying this mistake, but charting a path to growth is an entirely different matter!

Instapaper for iPad and iPhone Enhances My Web World

June 1, 2010

One of my favorite iPad and iPhone apps is Instapaper. Like the iPad itself, Instapaper seems almost foolishly simple and derivative until you experience it. Then it becomes something else entirely: A product so useful you may ask yourself “how did I ever get along without this?”