Metal Whiskers? In *My* Datacenter?

by Ryan 28. January 2013 17:04

Metal Whiskers*This image copyright NASA*

Metal whiskers, also referred to as tin whiskers or zinc whiskers, are something that I've read about with some curiosity before. Science does not currently fully understand why many metals and alloys form these tiny whiskers over time. The phenomenon has been known since the early 20th century, but we still don't know much about why it happens or how to effectively stop it.  It is still being studied today, and you can find metal whiskers in the news being blamed for things like fires aboard aircraft.  Obviously, these whiskers can wreak havoc in an electronic system whose components are packed tightly together. These whiskers can grow out of the solder used to manufacture electronic equipment, and they can also grow out of other non-electrified pieces of metal like server rack rails and the metal parts of datacenter raised flooring tiles. These tiny little metal whiskers can then be shaken loose or scraped off by such actions as lifting the floor tile and sliding it across the surface of an adjacent tile, then blown into the air by the datacenter ventilation system, and then subsequently sucked into the power supplies of the computers housed within the datacenter.  Resulting short-circuits can cause electronic component failure, and even fire.

This question was asked today by someone on ServerFault, which rekindled my interest in the subject.  I also recommend reading the Wikipedia on it.  And I highly recommend visiting this NASA page - an entire page devoted to the phenomenon of metal whiskers.

From that page, if you just watch or read one thing from it, I specifically recommend this video, which is specifically about the damage metal whiskers can do in a datacenter environment.

Cyber Monday Sale - Half Off eBooks from O'Reilly

by Ryan 26. November 2012 13:03

50% off all eBooks today from O'Reilly Media. Man I love eBooks. This is probably my Generation Y showing, but most times I'll take an eBook over print. (I know that makes most book lovers cringe.)

My shopping cart keeps growing...

Lack of IT Content Volume I

by Ryan 2. February 2012 12:49

Hey guys. No interesting and deeply technical documentation today. I've been pretty busy with work, and also going over Powershell material in preparation of teaching a Powershell Boot Camp at work. In the mean time though, here's something interesting I read today. It's a quote from Nikola Tesla written in the New York Times on the subject of Thomas Edison, the day after Edison died:

"He had no hobby, cared for no sort of amusement of any kind and lived in utter disregard of the most elementary rules of hygiene  ... His method was inefficient in the extreme, for an immense ground had to be covered to get anything at all unless blind chance intervened and, at first, I was almost a sorry witness of his doings, knowing that just a little theory and calculation would have saved him 90 percent of the labor. But he had a veritable contempt for book learning and mathematical knowledge, trusting himself entirely to his inventor's instinct and practical American sense."

Reading that instantly made me think of the more popular, and now more amusing quotes from Edison himself:

"Genius is one per cent inspiration and ninety-nine per cent perspiration."
"I have not failed. I've just found 10,000 ways that won't work."

An interesting perspective on the two diametric inventors, is it not?

Work smarter, not harder, folks.

PROTECT-IP and SOPA

by Ryan 29. December 2011 14:37

Here in the US, legislation that enacts radical change in our daily lives so rarely passes, that most people become apathetic towards politics altogether.  The government that we have built in this land is a sleeping giant in that it has the potential to affect our lives in profound ways, but is usually so deadlocked with compromise and fraught with infighting that we see it as mostly harmless.  We become desensitized to it because it moves so slowly.  We hope that it just leaves us alone, and it doesn't pester us enough to act when we should.  It is not without irony that because of this, we become the frog in hot water that doesn't realize what is happening until it’s too late. 

I am hoping that because I write to an intelligent group of people who are particularly enthusiastic and knowledgeable about technology and who understand the Internet, that this missive has a persuasive effect. 

There are bills in the House and Senate right now that threaten to change the face of the Web as we know it.  PROTECT-IP in the Senate and SOPA in the House.  One should not even bother with what the self-parodying acronyms stand for, as those words have nothing to do with the actual meaning, intent or effect of the bills themselves, and only serve to obfuscate the issue and sell the bills to the politicians who will vote on them. 

As an example, SOPA seeks to assign liability to site owners for everything that the users of their websites post.  The site owners could face DNS and search engine blacklisting, jail, and/or heavy fines for the content that their users post.  Furthermore, this bill denies said site owners due process of law by automatically initiating a DNS blacklisting based solely on an assertion made by an individual copyright or intellectual property owner, and without any necessary notification or forewarning to the site owner. 

Imagine all of the websites out there today on which users collaborate and post content.  Facebook, Youtube, every forum on the Internet, Twitter, reddit, LinkedIn, Google+, etc.  Hopefully I’ve mentioned a website that you use and enjoy today. 

Now imagine that those websites can no longer be, or rather can only exist as read-only channels for advertisements, because what website is going to accept the risk of liability for everything posted by the public on their site, moderated or not, under penalty of having their entire website shut down, or worse?  Even if such websites switched to an aggressive moderation/approval process where each and every post was approved by the site owners before it was allowed to be displayed, the site owners would be no less liable for the one offense that the moderators missed. 

What is probably the greatest irony of all is that as the free flow of information and ideas grinds to a halt because of this, the successful passing of this bill stands to benefit no one and the supporters of the bill will have only shot themselves in the foot.  I’ll never go see that movie in the theater because I never read that forum post where somebody posted a clip of it and talked about how awesome it was.  I’ll never buy that album because I never got to see the video where that really cool song was playing in the background.  I’ll never have that great idea because that site where like-minded individuals used to get together and share ideas was shut down. Who benefits from any of this nonsense, other than luddites bent on sending us back to the 20th century? 

On that note, we really need to talk to our Congressmen and women.  I know the person who reads this post is likely an IT pro and is probably really smart, and as such, getting people like us to do something is like herding cats.  But please, go to this site and enter your zip code and street address. (Or your neighbor’s street address if you’re paranoid.)  This will get you the names and phone numbers of the offices of your local representative, and our state senators.  For example:

I know that as a tech-savvy crew, we are used to dealing in emails and texts, but phone calls are more personal and will carry more weight than emails, especially to someone who may not fully understand the far-reaching implications of the bills they’re about to vote on. Take some time before you call to think about or write down what you want to say. Something polite about how you, as a constituent, would like to urge them to reconsider their support of this bill.

Tags:

Non-Computer

I Built a Desk

by Ryan 22. December 2011 08:30

I realized that I had been complacently tolerating my crappy, flimsy desk that I bought from Walmart 5 years ago, which I never liked. For one, it had a glass top, which meant it was always filthy. Secondly, it had a sliding keyboard tray, which meant that every time I was playing a video game for instance, and moving the mouse around trying to aim at people's heads, the whole tray would be wobbling and squeaking. The older it got, the more it wobbled and squeaked...

So I finally got fed up and decided to build my own computer desk! (Click to enlarge.)

It's not much to look at, and my father would probably be ashamed at my lack of woodworking skills, (something he's quite good at,) but it gets the job done! I just went to the nearest Home Depot and had some studs and some 3/4" plywood chopped up, and screwed it all together with beige deck screws. Then I spent two days putting polyurethane on the top. I hate polyurethane. It stinks and it takes forever to dry. And it smells bad, too. I'm... just gonna' go take a nap... right over here... *collapses dead from fume inhalation*

By some miracle, it actually turned out square and level. And it's solid as can be. No more wobbling or squeaking!

Here's the Visio diagram of this desk: desk.vsd (68.00 kb)

Here's the PDF for those of you with no Visio viewer: desk.pdf (100.35 kb)

And lastly, if you're interested in what's in that beastly server cabinet on the left, refer to this post.

About

Name: Ryan Ries
Location: Texas, USA
Occupation: Systems Engineer 

I am a Windows engineer and Microsoft advocate, but I can run with pretty much any system that uses electricity.  I'm all about getting closer to the cutting edge of technology while using the right tool for the job.

This blog is about exploring IT and documenting the journey.


Blog Posts (or Vids) You Must Read (or See):

Pushing the Limits of Windows by Mark Russinovich
Mysteries of Windows Memory Management by Mark Russinovich
Accelerating Your IT Career by Ned Pyle
Post-Graduate AD Studies by Ned Pyle
MCM: Active Directory Series by PFE Platforms Team
Encodings And Character Sets by David C. Zentgraf
Active Directory Maximum Limits by Microsoft
How Active Directory Replication Topology Works by Microsoft


MCITP: Enterprise Administrator

Profile for Ryan Ries at Server Fault, Q&A for system administrators

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I do not discuss my employers on this blog and all opinions expressed are mine and do not reflect the opinions of my employers.