Azure Classroom Series – 10/Apr/2020

Azure Virtual Machine Power States

• Starting: Indicates that vm is being started
• Running: Indicates that vm is running
• Stopping: Indicates that vm is being stopped
• Stopped: Indicates that vm is stopped
• Deallocated: Indicates that the VM is removed from the hypervisor, but still can be started

• Refer Here for the article

Reserved Instances

• Reserved INstances is about giving a long term commitment to azure and which reduces the bill
• So lets experiment a vm with B1S with Pay as you go
• NOw lets go with reserved instance for 1 year
• Now lets try with 3 years reserverd
• How to purchase a reserved Instance
  • You should have Owner role on the subscription
  • Login into Azure Portal
  • Navigate to All Services => Reservations
  • Now Add to purchase a reservation and select the additional options
    • Billing Frequency: Upfront/Monthly
    • Term: One/Three Years
    • Scope: Single Resource Group/Singe Subscription/Shared Scope
• Changes that can be and cannot be made after reservation
  • Can be Changed:
    • Scope
    • Instance Size
    • Ownership
  • Cannot Change:
    • Reservation’s Region
    • Quantity
    • Duration
• Can i Cancel?
  • Azure provides options to cancel, exchange or refund reservations

Spot VMs

• Allow you to take advantage of unuse capacity at very less pricing.
• Pricing works by a request (auction) to azure, when the current price is equal to your request price a vm is allocated in your subscription
• When the current price of vm is more than what you have requested for you will not get a vm.
• Warning note: Never use Spot VMs for Primary Servers

VM Types and Sizes

• Refer Here for Windows VM Sizes
• Refer Here for Linux VM Sizes

Next Topics

• Understanding sizes
• AZURE CLI and Azure Powershell