Author: Dave Farquhar

SMR hard drives

Dave Farquhar Hardware
SMR hard drives

Western Digital found itself in a dustup in the summer of 2020 because it shipped shingled media recording (SMR) hard drives as RAID and NAS drives. What is shingled media recording? What are SMR hard drives? And why should you avoid it in RAID? And should you avoid it in general use too?

Shingled media recording, or SMR, takes advantage of a quirk in the way drives write versus read that allows tracks to overlap, like shingles on a house. This increases storage and decreases cost, but decreases performance. Non-sequential writes, also known as random writes, suffer in performance greatly.

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Folding at home GPU not running

Dave Farquhar Hardware

Is your Folding at home GPU not running? If your GPU won’t fold, there may be several reasons for it. Here’s how to troubleshoot your GPU, and how to know when you just need to be patient and wait for the work. Read more

Best video card for i5-3470

Dave Farquhar Hardware
Best video card for i5-3470

My oldest son wants to build up a computer on a budget. I think he wants something a little better than the laptop I got him a couple of years ago, but I think he’s also curious about what goes into building or upgrading a PC. Right now, it’s easy to find brand-name i5-3570 PCs for very little. With a video card and an SSD, they become very respectable machines. But what’s the best video card for an i5-3470?

The onboard video in an i5-3470 is roughly equivalent to a Geforce 210, which is about the cheapest discrete video card on the market today. You won’t see any noticeable improvement unless you put in something at least equivalent to a GT 710 or R7 240.

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Are Lionel trains AC or DC?

Dave Farquhar Toy trains
Are Lionel trains AC or DC?

Are Lionel trains AC or DC? That’s a trick question. Traditionally, Lionel trains run on AC but there are exceptions. And even when Lionel trains run on AC, they sometimes do some DC trickery. Let’s explain.

Traditional Lionel trains from before 1969 can generally run on either AC or DC, but are better off running on AC. Some Lionel trains sold in discount stores in the 70s and 80s did run on DC, as a cost reduction measure.

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How to get an entry level cyber security job

Dave Farquhar Careers
How to get an entry level cyber security job

Unlike most of the job market, cyber security is a growing field with no signs of slowing down, lots of upward mobility, and good prospects for getting a raise once in a while. At the time of this writing, there are 500,000 security vacancies in the United States alone. There’s little hope of filling most of them. One of them could be you, if only someone would discover you. Here’s how to get an entry level cyber security job.

There’s no proven formula for getting into the cyber security field. But through a combination of networking and saying the right things on your resume and in the interview process, you can get into this field. Someone less smart than you has a security job. With some perseverance, you can get in too.

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Qualys false positives

Dave Farquhar security
Qualys false positives

I’m not sure any three words strike more fear into the hearts and minds of security analysts than the words “Qualys false positives.” Some number of false positives is unavoidable. But the perceived number of false positives is usually an order of magnitude larger than the real number of false positives. Here’s how to estimate how many you should have, how to investigate them, and break the gridlock.

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Dell Optiplex 3010 upgrades

Dave Farquhar Hardware
Dell Optiplex 3010 upgrades

I picked up a Dell Optiplex 3010 for cheap cheap over the weekend. It was a nice computer for its day, especially in the right configuration. But its day was a long time ago at this point. That said, it definitely has upgrade potential to get more life out of it.

The Optiplex 3010 is still fast enough to be serviceable, and can take an SSD, a video card upgrade, and up to 16 GB of RAM. This configuration will run Windows 10 well and even works surprisingly well for midrange gaming.

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Is Windows 7 safe to use?

Dave Farquhar security, Windows
Is Windows 7 safe to use?

Is Windows 7 safe to use? No. Next question? Alright, I guess I need to explain why, without being so dismissive.

Support for Windows 7 ended in January 2020, which means there have been no new security updates for Windows since. That means Windows 7 isn’t safe to use, even with a firewall and antivirus.

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Tales of computer retail past

Dave Farquhar Retro Computing
Tales of computer retail past

Somehow I escaped doing helpdesk or phone support early in my career. But I didn’t escape selling computers at retail at Best Buy. And since this was the 90s, I have some good stories. Some of them happened to me. Some happened to coworkers. None of them should be true.

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How to dust your model railroad

Dave Farquhar model railroading, Toy trains

Depending on the look you’re after, dust can detract from your model railroad layout’s appearance. Dust especially shows up in photographs. Here’s how to dust your model railroad quickly and easily.

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