AWS Certified SysOps Administrator Part IV: EC2 Instance Types


  • 1. On-Demand
    • a. Pricing Model: Standard Retail
    • b. Attributes
      • i. Default type
      • ii. Most expensive
      • iii. No commitment and no advanced fee
      • iv. Billed on an hourly basis
  • 2. Reserved Instances
    • a. Pricing Model: Pre-paid
    • b. Attributes
      • i. Less expensive
      • ii. Requires a commitment (1 or 3 year commitment)
      • iii. Reserved capacity. AWS will never over-provision
      • iv. Lower hourly rate
      • v. RI can be sold on the AWS marketplace
      • vi. Commiting to utilization
    • c. Purchase with following factors:
      • i. Platform (OS installed)
      • ii. Instance Type (size of the instance)
      • iii. Availability Zone
      • iv. Term (1 or 3 years)
      • v. Tenancy (Hardware / Dedicated)
      • vi. Offering (different payment plan)
    • d. When creating a new instance you can apply the Reserved instance credit
  • 3. Spot Instances
    • a. Pricing Model: Disposable machines that you bid on, if somebody outbids you then you lose it
    • b. Attributes
      • i. Unused capacity
      • ii. Very cheap hourly rate
      • iii. Not garaunteed
      • iv. Based on a bid
      • v. Ideal for raw processing power, grid-like applications
      • vi. Highly scriptable
    • c. Request Process
      • i. Max bid
      • ii. Set a launch group so that all your instances launch at the same time
      • iii. Presistent request, perpetual request…as long as the cost is below a certain threshold you will grab those instances
      • iv. Key pair needs to be specified
      • v. When the request is fulfilled then you can go grab those instances
      • vi. If you are outbid, you will get dropped…
  • 4. EC2 Instance Family
    • a. Micro Instances
      • i. Lowest end
      • ii. Family Codes: T
    • b. General Purpose
      • i. Family Codes: T & M
    • c. Compute optimized
      • i. Family Codes: C
    • d. GPU instances
      • i. Family Codes: G
    • e. Memory optimized
      • i. Family Codes: R
    • f. Storage optimized
      • i. Family Codes: I & D

One thought on “AWS Certified SysOps Administrator Part IV: EC2 Instance Types

  1. Pingback: AWS Certified SysOps Administrator Exam: Study Guide | Sky Cliffs

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