When POSIX I/O Meets Exascale, Do the Old Rules Apply?

We’ve all grown up in a world of digital filing cabinets. POSIX I/O has enabled code portability and extraordinary advances in computation, but it is limited by its design and the way it mirrors the paper offices that it has replaced.

The POSIX API and its implementation assumes that we know roughly where our data is, that accessing it is reasonably quick and that all versions of the data are the same. As we move to exascale, we need to let go of this model and embrace a sea of data and a very different way of handling it.

In …

When POSIX I/O Meets Exascale, Do the Old Rules Apply? was written by Nicole Hemsoth at The Next Platform.

Network Break 164: Amazon Reinvent Highlights; Server Revenues Jump

Cloudera Puffs Up Analytics Database For Clouds

In many ways, public clouds like Amazon Web Services, Microsoft Azure, and Google Cloud Platform can be the great equalizers, giving enterprises access to computing and storage resources that they may not have the money to be able to bring into their on-premises environments. Given the new compute-intensive workloads like data analytics and machine learning, and the benefits they can bring to modern businesses, this access to cloud-based platforms is increasingly critical to large enterprises.

Cloudera for several years has been pushing its software offerings – such as Data Science Workbench, Analytic DB, Operational DB, and Enterprise Data Hub – …

Cloudera Puffs Up Analytics Database For Clouds was written by Jeffrey Burt at The Next Platform.

Need Stocking Stuffers? See Amazon’s Highest Rated Tech Deals Under $25 – Deal Alert

This month, you'll probably need to buy stocking stuffers and cheap little gadgety things for co-workers, extended family members, or to fill in gaps last-minute when you find yourself asking, "Did I buy enough?".  Amazon has deals running every day, so we've filtered their list of active deals down to just the tech categories, and only the deals $25 or less with 4 or 5 star ratings.  Discounted USB cords, chargers, phone accessories, BlueTooth speakers, splitters, and other gadgets. Here it is: An impulse shopper's dream/nightmare. (Note: When you get to Amazon's page, scroll down past their "featured" deals to where the filtered list begins).To read this article in full, please click here

The First Albanian Network Operators Forum

On Tuesday, 14 November 2017, Albanian Internet Service Providers gathered in central Tirana for the first Albanian Network Operators Forum (ALNOF). The event was organized by RASH, the Albanian Academic Network, and NaMeX, the Internet Exchange Point based in Rome, Italy, with the goal of bringing Albanian ISPs together to discuss their common issues. The Internet Society sponsored the event.

The main topics on the agenda were Interconnection and Networking Community. Albania is one of the only countries in Europe that doesn’t have a neutral Internet Exchange Point: Internet traffic from one Albanian ISP to another sometimes crosses many borders and reaches Amsterdam, London, or Copenhagen before returning to Albania. RASH and NaMeX presented their partnership to create ANIX, the first neutral Internet Exchange Point in Albania, and MIXP presented its experience of the Internet Exchange Point in Montenegro. The session was completed by presentations on PeeringDB, the Facebook network, and IPv6.

As for the Networking Community topic, Albania is a small country where many people running network infrastructure operations know each other, but there is no actual “community” of ISPs. This session included presentations by two organizations that are committed to develop networking communities: Continue reading

Office 365 phishing examples | Salted Hash Ep 10

Salted Hash looks at recent Office 365 phishing examples, discussing why they work and what can be done about them.

IDG Contributor Network: The network 3.0

During the past three decades, we have seen a monumental growth in networking technology. From RFC-1163, which describes the beginnings of BGP in 1989 to the cloud and software defined networks of today, our voracious appetite for bandwidth and services have begun to outpace the networking industry’s ability to deliver.I remember when I had my first “broadband” – and I use that term loosely – circuit installed at my house. It was a 128kbps ISDN line from my local telco. Since it was 1996, I was riding high compared to everyone else using 28.8 kpbs modems to access the internet. Today I have a 1Gbps connection that allows me to stream 4k video from multiple providers. In roughly 20 years, my consumption of bandwidth has increased 8000%!To read this article in full, please click here

IDG Contributor Network: The network 3.0

During the past three decades, we have seen a monumental growth in networking technology. From RFC-1163, which describes the beginnings of BGP in 1989 to the cloud and software defined networks of today, our voracious appetite for bandwidth and services have begun to outpace the networking industry’s ability to deliver.I remember when I had my first “broadband” – and I use that term loosely – circuit installed at my house. It was a 128kbps ISDN line from my local telco. Since it was 1996, I was riding high compared to everyone else using 28.8 kpbs modems to access the internet. Today I have a 1Gbps connection that allows me to stream 4k video from multiple providers. In roughly 20 years, my consumption of bandwidth has increased 8000%!To read this article in full, please click here

5 Hot Enterprise Backup and Recovery Vendors

The Future of Network Interfaces

Enterprise network trends to watch 2018

What's going to shake things up in 2018? IT pros will have their hands full with technologies that have been hyped for some time and are now ripe for adoption, including software-defined WAN, hybrid cloud computing, hyperconvergence, and Internet of Things. See below for our collection of enterprise picks, predictions and prognostications.Why 2018 will be the year of the WAN Thinkstock Software-defined WAN technology is sweeping across the industry, growing from an emerging technology in 2017 to become mainstream in 2018. As SD-WAN deployments become ubiquitous for organizations with remote offices, more big changes will come. Check it out.To read this article in full, please click here

Enterprise network trends to watch 2018

What's going to shake things up in 2018? IT pros will have their hands full with technologies that have been hyped for some time and are now ripe for adoption, including software-defined WAN, hybrid cloud computing, hyperconvergence, and Internet of Things. See below for our collection of enterprise picks, predictions and prognostications.Why 2018 will be the year of the WAN Thinkstock Software-defined WAN technology is sweeping across the industry, growing from an emerging technology in 2017 to become mainstream in 2018. As SD-WAN deployments become ubiquitous for organizations with remote offices, more big changes will come. Check it out.To read this article in full, please click here

Enterprise network trends to watch

What's going to shake things up in 2018? IT pros will have their hands full with technologies that have been hyped for some time and are now ripe for adoption, including software-defined WAN, hybrid cloud computing, hyperconvergence, and Internet of Things. See below for our collection of enterprise picks, predictions and prognostications.Why 2018 will be the year of the WAN Thinkstock Software-defined WAN technology is sweeping across the industry, growing from an emerging technology in 2017 to become mainstream in 2018. As SD-WAN deployments become ubiquitous for organizations with remote offices, more big changes will come. Check it out.To read this article in full, please click here

Enterprise network trends to watch

What's going to shake things up in 2018? IT pros will have their hands full with technologies that have been hyped for some time and are now ripe for adoption, including software-defined WAN, hybrid cloud computing, hyperconvergence, and Internet of Things. See below for our collection of enterprise picks, predictions and prognostications.Why 2018 will be the year of the WAN Thinkstock Software-defined WAN technology is sweeping across the industry, growing from an emerging technology in 2017 to become mainstream in 2018. As SD-WAN deployments become ubiquitous for organizations with remote offices, more big changes will come. Check it out.To read this article in full, please click here

LVM Configuration the Easy Way

Now oVirt features a simple way to prevent a host from scanning and then activating logical volumes that are not required directly by the host. In particular, the solution addresses logical volumes on shared storage managed by oVirt, and logical volumes created by a guest in oVirt raw volumes. Why is a solution required? Because scanning and activating other logical volumes may cause data corruption, slow boot, and other issues.

The solution is configuring an LVM filter on each host, which allows LVM on a host to scan only the logical volumes required directly by the host. To achieve this, we have introduced a vdsm-tool command, config-lvm-filter, that will configure the host for you.

The new command, vdsm-tool config-lvm-filter analyzes the current LVM configuration to decide whether a filter should be configured. Then, if the LVM filter has yet to be configured, the command generates an LVM filter option for this host, and adds the option to the LVM configuration.

Scenario 1: An Unconfigured Host

On a host yet to be configured, the command automatically configures the LVM once the user confirms the operation:

# vdsm-tool config-lvm-filter
Analyzing host...
Found these mounted logical volumes on this host:

  logical volume:  /dev/mapper/vg0-lv_home
   Continue reading

Simplifying ipSpace.net Products

When I started my ipSpace.net project life was simple: I had a few webinars, and you could register for the live sessions. After a while I started adding recordings, subscriptions, bundles, roadmaps (and tracks), books… and a few years later workshops and online courses.

As you can imagine, the whole thing became a hard-to-navigate mess. Right now you can buy almost 70 different products on ipSpace.net. Time for a cleanup.

Network Neutrality – Again

Technology with Purpose: Vashkar Bhattacharjee’s Story

In honor of today’s International Day of Persons with Disabilities, we are sharing part one of Vashkar Bhattacharjee’s story. He is the National Consultant, Accessibility, A2i, Prime Minister’s Office of Bangladesh, and the Program Manager, Young Power in Social Action (YPSA).

I am Vashkar Bhattacharjee, a visually impaired person from Bangladesh. And this is the story of how I have excelled in life and career, not through sympathy and charity, but through inspiration and assistance.

In Bangladesh, every 1 in 10 persons experience at least one kind of disability. I am one of approximately 4 million Bangladeshis who are visually impaired.

In 1979, like most of the villages in Bangladesh, my village in the district of Chittagong did not have doctors or hospital facilities. On July 1^st in the same year, in a small remote village called Bagdondi, I was born in my parental home without any medical supervision. Right after my birth, I was bleeding through my nose and mouth. My parents and relatives could not figure out what was wrong. After a while, the bleeding stopped and everything seemed to be normal. By the time I was two years old, my parents realized the heartbreaking truth that Continue reading

Worth Reading: The Basic Math behind Reliability

Diptanshu Singh wrote a nice explanation of the math behind reliability calculations. Definitely worth reading even if you hated statistics.

A Dummy Light for My Network

I’ve always heard the red lights in car dashboard referred to as Dummy Lights. One example might be the use of a light to indicate high temperature in lieu of a temperature gauge. Over the past few weeks, I’ve spent more time doing unique things with hardware and software. Yesterday I challenged myself to build an indicator light to show health issues with my Meraki MX.

Before I get into this, the cool factor here is not what I have built. The cool factor is that someone with very little experience, driven by curiosity, can build this in a very short period of time. I’m neither a professional developer nor someone with deep knowledge around hardware hacking. So I want to solicit thoughts, feedback, and recommendations.

The Trigger

After a little research, I found that the Meraki Dashboard provides a “Load Monitor” that is returned via a perfScore value. This feature is in beta and there’s not a lot of information on it. Therefore, consider your own data source that you would like to use as a trigger value. The following python code will store a numeric value (score) between 1 and 100 (with a lower number being a better score).

import  Continue reading