This Week I Learned - Week #210

This Week I Learned -

Q: What is the maximum number of virtual machines I can have in an Azure Availability Set?
A: 50

Q. Can I use the same storage account for all the VMs in an availability set?
A. Yes but it is better to use different storage accounts for each VM in the Availability Set.

Q. Can I create more than 100 NSGs per region per subscription?
A. Yes. 100 is the default limit but can be increased to 400 for ARM (200 for ASM).

Q. Can an Azure resource be in more than one Resource Group?
A. No

Q. Can an Azure VM have more than one public IP?
A. No. While an Azure VM can have multiple vmNICs, only the primary adapter can be assigned a public IP.

Q. How many virtual networks can be peered in Azure?
A. Each virtual network can be peered to up to 10 virtual networks.

Q. If I have an IaaS VM talking to a PaaS SQL database does the traffic flow through the Microsoft network?
A. Yes.

The goal of the Availability Set is to split your VMs in the Availability Set over 2 (ASM) or 3 (ARM) fault domains

* The higher the number of update domains the smaller the number of instances that are unavailable during each planned maintenance cycle.

* A Resource Group can span locations, and it can be either heterogeneous, i.e. containing different types of resource (such as a database, a VM, a website and so on) or it can be homogeneous.

* SQL Database provides up to 200% of your maximum provisioned database storage as backup storage at no additional cost. For example, if you have a Standard DB instance with a provisioned DB size of 250 GB, you have 500 GB of backup storage at no additional charge.

* The Long-Term Backup Retention feature enables you to store your Azure SQL Database backups in an Azure Recovery Services vault for up to 10 years. Long-term backup retention of an Azure SQL database is charged according to the Azure backup services pricing rates.

* You can save up to 40 percent on Windows Server virtual machines running in Azure by using your existing Windows Server licenses with Software Assurance

* Hybrid cloud use cases [PDF]

* Azure Storage accounts by default are set up to be geographically redundant

Azure Master Program offers Hands-on Labs that let you try some activities without requiring to sign-up for a Subscription

The release of Sitecore 8.2 update 1 included full Sitecore Azure Web Apps support. It takes 15-20 minutes to provision a vanilla Sitecore environment. Azure Marketplace provides Point and Click setup of Sitecore-approved topology and provisions a vanilla  Sitecore deployment to the selected datacentre. Azure Resource Manager (ARM) templates are more customizable

Amazon AI services offer natural language understanding (NLU), automatic speech recognition (ASR), visual search and image recognition, text-to-speech (TTS), and machine learning (ML) technologies

Apache MXNet is a fully-featured, flexibly-programmable and ultra-scalable deep learning framework supporting state-of-the-art deep models including convolutional neural networks (CNNs), and long short-term memory networks (LSTMs).

* Amazon Go convenience store uses machine vision to eliminate checkout lines. Machine learning drives Amazon's algorithms for demand forecasting, product search ranking, product and deals recommendations, merchandising placements, fraud detection, translations, and much more. Amazon Lex (what's inside Alexa), Amazon Polly, and Amazon Rekognition remove the heavy lifting from natural language understanding, speech generation, and image analysis. They can be accessed with simple API calls — no machine learning expertise required - Business Insider

* AI has helped Bing more than double its share of the search engine market (to 20%); as of 2015, Bing generated more than a $1 billion in revenue every quarter - HBR

* A  2016 survey from Deloitte found that Americans collectively check their phones 8 billion times per day. The average for individual Americans was 46 checks per day, including during leisure time—watching TV, spending time with friends, eating dinner. - HBR

* According to Facebook, the average Facebook user spends almost an hour on the site every day. The more you use Facebook, the worse you feel

* The Government has blacklisted 34,000 Aadhaar agencies for polluting UIDAI. 34,000!

* Big Blue allowed employees to work from home way back in the ’80s, when the technology to telecommute was not so great. The three biggest reasons for companies to introduce WFH are to do with work-life integration, attracting key talent, and driving cost efficiencies. Over 66 per cent of remote workers in IT/ITES companies (according to a 2008 TCS study) are women. Four years ago Marissa Meyer decreed Yahoo employees could no longer work from home. This year, it is IBM CMO Michelle Peluso’s turn to tell her 2,600-people-strong marketing department that there will be no more telecommuting. Other adopters of this hardline approach include one of Silicon Valley’s greatest success story – Google. - Hindu Business Line

* Nearly all public companies in the US have clawback (or forced return of pay and stock grants) provisions, but boards are typically loath to invoke them - NY Times

Google's music streaming service in India is priced a third lower than iTunes.

Pakistan's liabilities, both private and public, are already a staggering 75 per cent of GDP, or Rs 22.5 trillion

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