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EC2 summary (components (Instance type (4 element) ((Ans: capacity scaling…

- - - - Ans: capacity scaling need down time need to shutdown server:
      - -CPU
      - -Memory
      - -Storage (EBS or instance store (is SSD) )
      - Network BW
    - - Require down time
    - - General purpose
        
        general workload
        
        Compute optimized (Half good/half bad)- Mathematic calculation (M: electric barain, multiplayer gaming, and video encoding, high performance computing, .multiplayer gaming, video encoding
        
        Memory optimized :
        
        nd in memory cache and in-memory DB
        
        Storage optimize
        
        high IOPS
        
        Hadop file system, network file system, big data cluster
        
        Accelerated optimized
        
        GPU intensive
        
        Machine learning and 3Dimension rendering, deep learning, earthquake analaysis
  - - - OS,
        
        App/library,
        
        Block device mapping ?
        
        Sepcifies volume to be attached
      - Launch permission
- - - - security group
      - type of subnet
        
        Private subnet
        
        Internal facing
        
        access
        
        Outbound through NAT GW
        
        Inbound through IGW
        
        Public subnet
        
        Internet facing
        
        Ibound access through IGW
      - NACL
        
        firewall for controlling traffic in and out of one or more subnets.
        
        allow SSH and RDP traffic into the subne
    - - Ec2-classic is the EC2 that don’t need VPC, and is under shared network
      - default VPC
        
        ease of config
- - - - IOPS
      - Storage
- - - - On demand hourly basic1.
      - As reservation
    - - by using existing server bound license
      - EX: VMware, Microsoft SQL