Collaborate Disseminate
I spent a chunk of the day troubleshooting a network security monitoring (NSM) problem. I thought I would share the problem and my investigation in the hopes that it might help others. The specifics are probably less important than the general approach… Continue reading Troubleshooting NSM Virtualization Problems with Linux and VirtualBox
The Computer History Museum in Mountain View has two operational IBM 1401 mainframes, which use IBM 1403 high-speed printers. They aren’t some decades-old notion of “high speed” that barely looks sluggish today, either. These monsters slam out ten lines per second thanks to a rotating chain of type slugs and an array of electromagnetic hammers. Every 11.1 microseconds, a character in the chain would be lined up with a hammer, and if the control circuitry identified it as a character that needed to be printed, the hammer behind the paper would drive the paper into the print ribbon and the …read more
Continue reading Vintage IBM 1403 Printer Problem Evades an Easy Fix
The IBM PCjr was a computer only the marketing geniuses of a multi-billion dollar corporation could love. On the face of it, it seemed like a great idea – a machine for the home market, meant to complement the “big boy” IBM PC in the office and compete against the likes of Apple and Commodore. What it ended up as was a universally hated, only partially PC-compatible machine which sold a mere half-million units before being mercifully killed off.
That doesn’t mean retrocomputing fans don’t still snap up the remaining machines, of course. [AkBKukU] scored a PCjr from a thrift …read more
Continue reading IBM PCjr Revived by an ATX Power Supply and Many False Starts
In today’s Ask the Admin, I’ll look at how you can use the Reliability Monitor in Windows 10 to solve problems.
The post Solving Problems Using Reliability Monitor in Windows 10 appeared first on Petri.
Continue reading Solving Problems Using Reliability Monitor in Windows 10
When a crisis happens and your system is down, it’s easy for panic and chaos to ensue. Large companies use a range of tools to monitor system health, and finding the source of the problem and ensuring the proper personnel are involved is no… Continue reading xMatters snares $40 million Series D led by Goldman Sachs Private Capital Investing
Electronic components are getting smaller and for most of us, our eyesight is getting worse. When [Kurt] started using a microscope to get a better view of his work, he realized he needed another tool to give his hands the same kind of precision. That tool didn’t exist so he built it.
The PantoProbe is a pantograph mechanism meant to guide a probe for reaching the tiny pads of his SMT components. He reports that he has no longer has any trouble differentiating pins 0.5 mm apart which is the diameter of the graphite sticks in our favorite mechanical pencils. …read more
Electronic components are getting smaller and for most of us, our eyesight is getting worse. When [Kurt] started using a microscope to get a better view of his work, he realized he needed another tool to give his hands the same kind of precision. That tool didn’t exist so he built it.
The PantoProbe is a pantograph mechanism meant to guide a probe for reaching the tiny pads of his SMT components. He reports that he has no longer has any trouble differentiating pins 0.5 mm apart which is the diameter of the graphite sticks in our favorite mechanical pencils. …read more
Earlier this year a simple indicator LED brought the Keck 1 telescope, a 370 tons mass, to a halting stop. How exactly did an LED do this? Simple: it did nothing.
As it so happens, [Andrew Cooper] was just about the leave the summit of Mauna Kea (in Hawaii) when his radio instructed him otherwise: there was an issue. Upon returning, [Andrew] was met by a room of scientists and summit supervisors. “Yeah, this was not good, why are they all looking at me? Oh, h%#*!” The rotor wasn’t moving the telescope, and “no rotator equals no science data.” After …read more
Ever want to take a closer look at how long it actually takes for a computer to reboot and get a user logged on? This tip from Microsoft will show you exactly how to accomplish this type of analysis.
read more Continue reading IT Pro Tip: Evaluate and Measure Computer Reboot and Logon Times
Find out how you can monitor the deployment of an Azure JSON template using the Azure Portal and debug what went wrong using errors in the Azure Portal and the Azure Resource Explorer.
The post Monitoring & Troubleshooting Azure JSON Deployments appeared first on Petri.
Continue reading Monitoring & Troubleshooting Azure JSON Deployments
