AZ-900 study notes

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Storage

  • Blob storage is a flat structure used for unstructured data (images, videos etc)
  • Azure file storage and Azure Data Lake storage are hierarchical file storage similar to SMB shares, both of which you can do shares on

Connectivity

  • Azure Express route is more expensive than a site to site VPN
  • Azure Express route does not traverse the internet, it's a private connection
  • One vnet cannot talk to another vnet unless you create a vnet peer
  • For a site to site vpn the "Local Network Gateway" is created in Azure but it refers to the IP address of the on prem router/VPN. The "Virtual Network Gateway" is also created in Azure but this refers to the Azure side of the VPN
  • By default all virtual machines get outbound traffic to the internet
  • You can divide a vnet up in to subnets and configure routes between them
  • If you want inbound traffic from the internet to a vm you must assign a public IP to the vm

Subscriptions

  • One subscription can have a max of 980 resource groups
  • One subscription can have a max of 50 tags
  • A subscription is a collection of resources

Azure Migrate

Azure Migrate discovers on prem servers both physical and virtual and also both on Hyper-V and vmWare, it then assess the machine and tells you if its ready to migrate to Azure.

It will tell you how big the vm will be, how much it will cost and any other dependent servers that will also need to be migrated.

It will also help you migrate SQL Servers, WebApps, Desktops and data.

Azure Container Instance

Allows you to run a container with a single command.

Azure Kubernetes

Allows you to run multiple containers which is known as a container orchestrator

Azure Functions

This is a serverless offering, allowing for individual functions to run and you only pay for it when it gets used.

Billing

A billing account is an agreement between you and Mircosoft that you are using Azure Services.

Regions

  • A region that supports availability zones has at least 3 datacenters, each datacenter is known as a zone.
  • When viewing the Microsoft datacenter location map, if it has a diamond on it then that means it supports availability zones.

Cloudshell

  • Cloudshell supports both powershell and bash
  • The first time you run CloudShell it will ask you for permission to create a storage account that the CloudShell vm can us
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