Nerd Polytechnic

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VMware Virtual GPU – A beginners guide.

Currently  (November 2014) on VMware there is two ways to deliver GPU workloads to Virtual Desktops on VMware. If your new to GPU this post will give you an overview with both technologies (vSGA and vDGA) and give you some of each solutions strengths and weaknesses. vSGA (Virtual Shared Graphics adaptor) uses a driver, installed within the Hyper-Visor (ESXi) that grabs requests for GPU from the virtual machine and directs it to a GPU. The benefit of this technology is multiple virtual machines can share a single GPU. The limiting factor here is your graphic cards video ram and the...

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Throw away the crystal ball and size with real data.

Over the years I have come to realise that every Solution Architect has their own technique for scoping and sizing a solution. It generally involved a finger in the air, a shake of the crystal ball and hopefully some current environment actuals. However, now that the Webscale / Hyper-Converged revolution is well and truly underway we don’t have to oversize environments or predict what an environment will need 5 years out. We can start to deploy just in time compute and storage, which means no more wasted money, power or cycles. So here I have put together some hints and...

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Security starts with education…

Why is it companies spend so much time and money implementing IT security systems, but to date I have never heard of a company putting their staff through basic IT security training. You have to admit that these days IT security has gotten pretty good. Audits, compliance, ethical hacking and pen testing keep systems and developers honest. Intrusion detection systems, firewalls and DDoS protection keep networks secure. I would hazard a guess and say the biggest threat is the one that hasn’t changed… the Users. As a fun experiment when you hear of a organisation getting “hacked”, see if you...

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Automated snapshots of your Amazon EC2 instances EBS volume

  So I am a big fan of automation, however the problem with automation is two fold. On one hand it reduces errors, but also makes failures spectacular. The other uhh.. fold (?) is how much time you spend trying to make a simple task automated. I wanted to come up with a simple way to backup my EBS instance, and got thinking about ssh tunnels, rsync and my MacMini home server. That is until I found this awesome script to do automated EBS Snapshots. https://github.com/colinbjohnson/aws-missing-tools/tree/master/ec2-automate-backup Here is a quick run-through for people new to AWS on how to set...

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Moving your blog to an Amazon EC2 Instance

AWS is the new hotness, and I am totally on the bandwagon.. so much so that I have been personally awarded this “cloud ninja” sticker from amazon.. A honour that I will tell my cat about. Amazon has a whole swag of services, of which I am interested in two for this hosting requirement. The first being EC2, which is their Virtual Server product and the second being EBS which is their block storage offering. The cool thing with EBS volumes is they are portable, so you can move them around and map them to different virtual servers. A quick...

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BYOD or Bust! Can we get rid of the corporate desktop

When I started in the IT industry computers had yet to reach default appliance status. Some family’s had a shared system but really most people would see their company issued desktop as their primary computing device. You might do a bit of web browsing at work, send that email to friends from your corporate address and that did the trick. Between those years and today people started to get personal computers, not shared home machines but their own system. This was a nightmare for Architects and Admins as we had the task of keeping these potentially disease infested computers off...

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Lecture – Village Telco and the Mesh Potato

Glen and I presented the Mesh Potato to the Manly Warringah Radio Society this week. If your not following, the Mesh Potato a wifi router / telephone ATA used as a building block for the village telco project. The Village Telco is an initiative to build low-cost community telephone network hardware and software that can be set up in minutes anywhere in the world.  No mobile phone towers or land lines are required. The Village Telco uses the latest Open Source telephony software and low cost wireless mesh networking technology to deliver affordable telephony anywhere. We just put the video...

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International Lighthouse Lightship Weekend 2012

With lighthouse weekend behind us for another year I can confidently say the weekend was a great success. Once again the Chase Alive team helped us gain access to the Barrenjoey Lighthouse and it’s keepers cottage. This was a huge bonus as it allowed us to comfortably run multiple stations  from the elements, which this year included some very serious wind. The MWRS team clambered up the hill early Saturday morning to setup a 40 Meter Dipole, A separate 3 beam TH-3 Yagi and a multiband whip. By 10 AM we were on the air and making our first contacts. One of the more unique ones would have...

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Work / Life Balance – What’s in it for the shareholders?

The demands modern businesses place on their employees is continually expanding, yet the methodology many organisations utilise for how their staff should carry out and deliver their work remains largely unchanged. This failure to meet employee needs means the average worker now changes role 12 times during their career, seeking employment that allows them to meet the demands of their personal and professional lives. This essay discusses how work-life balance programs benefit organisations by improving employee recruitment, retention and productivity. By reviewing modern day business challenges we can see how the needs of the business and the needs of the...

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Why your Windows Foo doesn’t impress the grim reaper

Some of my ranty previous posts have mentioned cloud computing in various ways, and reading back I think it’s funny how much more I know about cloud now. I have spent countless hours researching the topic, working with vendors and resellers and now developing plans for resellers to go to market. Why the change of heart, well it all comes down to the opportunities I have seen it generate and the power I have seen it deliver to end users. The dumb smart phone. Almost everyone is a cloud customer in some way. Don’t believe me, look at your iphone,...