This Week I Learned - Week #123

This Week I Learned -

* Azure may provision VMs having either AMD or Intel processors. Currently, there is no choice of hardware while creating VMs in Azure. G-series VMs run on hosts with Intel Xeon E5 V3 family processors.

All images and disks in Azure, except the temporary disk, are actually virtual hard disks (VHDs). The virtual hard disks are .vhd files stored as page blobs in a standard or premium storage account in Azure. They can also be fixed, dynamically expanding, or differencing. Azure supports VHD format, fixed disks.

Once a blob is created/uploaded you can't change the blob type.

* AWS EC2 virtual machines use EBS (similar to page blobs) for running disks

You can’t assign more vCPUs to a virtual machine than you have physical cores in your host.

Jeff Bezos believes in data-driven management. Amazon has laid out 14 leadership principles. “Amazon is where overachievers go to feel bad about themselves”. As team members are ranked, and those at the bottom eliminated every year, it is in everyone’s interest to outperform everyone else.

Workday, a human resources software company, makes a product called Collaborative Anytime Feedback that promises to turn the annual performance review into a daily event. One of the early backers of Workday was Jeff Bezos, in one of his many investments. 

The median employee tenure at Amazon is one year, among the briefest in the Fortune 500

Total colorblindness, in which a person sees only black and white, is very rare.

* Hyderabad’s IT workforce has 3.20 lakh professionals. Hyderabad accounts for only 13 per cent of the country’s IT exports against 31 per cent from the Garden City (Bangalore)

* Put your phone on airplane mode & it will charge faster

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