One of the racks for internal virtualization. We put effort into color coding the cables: orange indicates odd power input, while green signifies even. We often talk about the big stuff—chillers, diesel generators, switchgears. Today, we will discuss the 'smaller things'—the outlets in the racks, also known as Power Distribution Units (PDUs). In our data centers, there are over 4,000 racks filled with IT equipment, so […]
While waiting for the PS5 and Project Scarlett, which will support ray tracing, I pondered the lighting in games. I found a piece where the author explains what light is, how it affects design, alters gameplay, aesthetics, and experience, complete with examples and screenshots. During gameplay, you don’t notice it right away. Introduction Lighting is needed not only for […]
Many of us enjoy listening to the radio in the mornings. One beautiful morning, I realized that I no longer wanted to listen to local FM stations. They were uninteresting. But this habit proved to be detrimental. So, I decided to replace my FM receiver with an internet receiver. I quickly bought parts on AliExpress and assembled the internet receiver. About the internet receiver. The heart of the receiver is the ESP32 microcontroller. The firmware is from […]
Many have encountered the remarkable feature found, for example, in HPE switches—if the configuration is not saved manually for some reason, the previous saved configuration is applied after a reboot. The technology can be merciless (forget to save—start over), but it is fair and reliable. However, MikroTik devices lack such a feature in their base, although there is a long-known saying: 'remote router configuration […]
Last week, Microsoft officially stated that the next version of its desktop OS will be called the Windows 10 November 2019 Update. Now, details have emerged about the release timeline. It is noted that the new version will be released in November, specifically on the 12th. The rollout of the update will occur in phases. The patch will be offered to everyone using Windows 10 May 2019 Update or […]
Google has announced enhancements to Chrome's site isolation mode, which ensures that pages from different websites are processed in separate isolated processes. The site-level isolation mode helps protect users from attacks that may occur via third-party blocks used on the site, such as iframe embeds, or to prevent data leakage through the embedding of legitimate blocks (for example, with requests […])
A vulnerability (CVE-2019-17666) has been identified in the rtlwifi driver for wireless adapters using Realtek chips, which could potentially be exploited to execute code in the kernel context through specially crafted frames. The vulnerability arises from a buffer overflow in the code implementing P2P mode (Wi-Fi Direct). There is a lack of size checks when parsing NoA (Notice of Absence) frames […]
On October 18, 2019, yet another iteration of the popular GNU/Linux distribution was released — Ubuntu 19.10, codenamed Eoan Ermine (Rising Ermine). Key updates include: ZFS support in the installer. It uses the ZFS On Linux driver version 0.8.1. ISO images include proprietary NVIDIA drivers: in addition to open-source drivers, users can now select proprietary ones. System boot times have been accelerated by the use of a new compression algorithm. […]
On October 17, a new release of the OpenBSD operating system was announced — OpenBSD 6.6. Release cover: https://www.openbsd.org/images/sixdotsix.gif Key changes in the release: Switching to the new release can now be done through the sysupgrade utility. In release 6.5 it was provided through the syspatch utility. Upgrading from 6.5 to 6.6 is possible on amd64, arm64, and i386 architectures. The amdgpu(4) driver has been added. startx and xinit are now back to […]
The dream of every person is to stay young for as long as possible. We do not want to age and fall ill, fearing everything — cancer, Alzheimer's disease, heart attacks, strokes… It’s time to figure out where cancer comes from, whether there is a connection between heart failure and Alzheimer's disease, infertility and hearing loss. Why do antioxidant supplements sometimes do more harm than good? And most importantly: can we […]
"Mutation is the key to understanding the mystery of evolution. The path from the simplest organism to the dominant biological species takes thousands of years. But every hundred thousand years, there is a sudden leap forward in evolution" (Charles Xavier, X-Men, 2000). Leaving aside all the sci-fi elements present in comics and films, Professor X's words hold a grain of truth. The development of […]
HPE InfoSight – a cloud service by HPE that allows for proactive identification of potential issues with the reliability and performance of HPE Nimble and HPE 3PAR arrays. The service can also immediately recommend ways to resolve potential problems, and in some cases, issues can be addressed proactively and automatically. We have previously discussed HPE InfoSight on HABR, see […]