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Virtualization for dummies 2 0

How to Setup DRDB to Replicate Storage on Two Servers

January 14, 2019 tecmint Leave a Comment

The DRBD (stands for Distributed Replicated Block Device) is a distributed, flexible and versatile replicated storage solution for Linux. It mirrors the content of block devices such as hard disks, partitions, logical volumes etc. between servers. It involves a copy of data on two storage devices, such that if one fails, the data on the other can be used. You can think of it somewhat like a network RAID 1 configuration with the disks mirrored across servers. However, it operates in a very different way from RAID and even network RAID. Originally, DRBD was mainly used in high availability (HA) computer clusters, however, starting with version 9, it can be used to deploy cloud storage solutions. In this article, we will show how to install DRBD in CentOS and briefly demonstrate how to use it to replicate storage (partition) on two servers. This is the perfect article to get your started with using DRBD in Linux. Testing Environment For the purpose of this article, we are using two nodes … [Read more...] about How to Setup DRDB to Replicate Storage on Two Servers

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Apple R&D spend increases to 7 percent ahead of expected big fall launch cycle

July 31, 2018 appleinsider Leave a Comment

By Mikey Campbell Tuesday, July 31, 2018, 06:36 pm PT (09:36 pm ET) Apple's capital outlay for research and development operations continued to balloon in its third fiscal quarter of 2018, with the company spending $3.7 billion on future products and services, up $760 million year-over-year. The tech giant revealed the latest uptick in R&D spend in a regulatory filing with the U.S. Securities and Exchange Commission on Tuesday, which served as record of the company's record-breaking June quarter. Apple's allotment represents 7 percent of the company's $53.3 billion in net sales for the period. The figure is up from $3.4 billion Apple earmarked for future projects over the course of its second fiscal quarter and well ahead of last year's third quarter outlay of $2.94 billion. Apple typically allots between 4 percent and 5 percent of a quarter's net sales to R&D, leaving the 7 percent spent during the most recent quarter as somewhat of an outlier. During the same time last … [Read more...] about Apple R&D spend increases to 7 percent ahead of expected big fall launch cycle

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Apple R&D spend increases to 7 percent ahead of expect big fall launch cycle

July 30, 2018 appleinsider Leave a Comment

By Mikey Campbell Tuesday, July 31, 2018, 06:36 pm PT (09:36 pm ET) Apple's capital outlay for research and development operations continued to balloon in its third fiscal quarter of 2018, with the company spending $3.7 billion on future products and services, up $760 million year-over-year. The tech giant revealed the latest uptick in R&D spend in a regulatory filing with the U.S. Securities and Exchange Commission on Tuesday, which served as record of the company's record-breaking June quarter. Apple's allotment represents 7 percent of the company's $53.3 billion in net sales for the period. The figure is up from $3.4 billion Apple earmarked for future projects over the course of its second fiscal quarter and well ahead of last year's third quarter outlay of $2.94 billion. Apple typically allots between 4 percent and 5 percent of a quarter's net sales to R&D, leaving the 7 percent spent during the most recent quarter as somewhat of an outlier. During the same time last … [Read more...] about Apple R&D spend increases to 7 percent ahead of expect big fall launch cycle

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Amazon founder Jeff Bezos test fires Blue Origin rocket capsule that will blast tourists into space next year

December 14, 2017 thesun Leave a Comment

IT'S one small step for travel - and one giant leap closer for tourists to get to space. Space tourism firm Blue Origin managed to send its Crew Capsule 2.0 into space, and have it return with its test dummy Mannequin Skywalker safe and secure. The successful test in West Texas, it means it is a step closer to getting tourists with the ultimate case wanderlust into space, thanks to the company, owned by Amazon's Jeff Bezos. Bezos took to Twitter about the excitement, writing: "#NewShepard had a successful first flight of Crew Capsule 2.0 today. "Complete with windows and our instrumented test dummy. He had a great ride. @BlueOrigin" The 10 minute flight saw Crew Capsule 2.0 take off, reaching 61.7 miles above sea level - just below the 62.1 mile mark that is considered the start of space travel. But despite the huge height that the craft, which has huge 2.4 x 3.6 ft windows, managed to reach, it made it safely back to earth during the trial in Texas. It is hoped that the ability … [Read more...] about Amazon founder Jeff Bezos test fires Blue Origin rocket capsule that will blast tourists into space next year

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The immersive audio you’ve never heard that could revolutionize virtual reality

March 29, 2018 robert Leave a Comment

Image credit: DiracSurround sound is history. It may have been considered cutting-edge a decade ago, but with most music and video now watched on mobile phones, the fight is on for audio … that moves. Built around a 360-degree sphere, so-called immersive or spatial audio tech is being designed by the likes of Dirac, DTS, Dolby and THX primarily for virtual reality (VR) headsets, but who can ignore the world’s 2.5 billion smartphones? The race is on to produce the definitive format for 3D audio.What is immersive audio?Designed primarily for VR, but also for mobile devices, immersive audio has three parts to it. The first is channels; home cinemas use a 5.1 system to handle front, left, right, left rear, right rear, and a subwoofer, and immersive audio is based initially on that same framework. The only difference is that now it can mimic an 11.1 or higher array.The second part of immersive audio is ambisonics. “Ambisonics are spherical sounds that are … [Read more...] about The immersive audio you’ve never heard that could revolutionize virtual reality

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