EC2

Annotations:

• Amazon Elastic Compute Cloud (Amazon EC2) 

1. EBS-Elastic Block Storage

   Annotations:

   • Def of EBS: Amazon EBS allows you to create storage volumes and attach them to Amazon EC2 instances. Virtual Disk.
   • Features: -Automatically replicated in case of failure of single component -Root Volume holds OS and cannot be encrypted
   1. Magnetic HDD

      Annotations:

      • -EBS Storage Type
      1. Trough Put Optimized (ST1)

         Annotations:

         • - best for big data -Cannot be a boot volume
      2. Cold HDD (SC1)

         Annotations:

         • -good as a file server -lowest cost -it cannot be a boot volume
      3. Magnetic (Standard)

         Annotations:

         • -best for infrequent access -lowest cost volume that you can boot from
   2. SSD

      Annotations:

      • -EBS Storage Type
      1. General Purpose

         Annotations:

         • -balances price with performance -allows between 3-10,000 IOPS per GB -has a 3000 IOPS burst for 3334 GB volumes
      2. Provision (IO1)

         Annotations:

         • -best for I/O intensive workloads -allows more than 10,000 IOPS -up to 20,000 IOPS per volume
2. Networking and Security
   1. Security Groups
      1. Inbound
      2. outbound
   2. EC2 Key Pair

      Annotations:

      • private  public
3. ELB - Elastic Load Balancer

   Annotations:

   • -Elastic Load Balancer (ELB) evenly distributes the workload across the AWS services
   1. Application Load Balancer

      Annotations:

      • -HTTP load balancer that works on web traffic -Works at the L7 level -can make smart routing decisions -can "see" all the way to the application layer
   2. Network Load Balancer

      Annotations:

      • Balances TCP traffic -Works at the L4 level -very fast performance -used if latency is a problem
   3. Classic Load Balancer

      Annotations:

      • -Slower than both Application and Network load balancers -works at the L4 or L7 layers
4. Instance Types

   Annotations:

   • -F for FPGA -I for IOPS -G for High Graphics -H for High Disk Throughput -T for cheap general purpose (think T2 Micro) -D for Density -R for RAM -M for main choice for general purpose apps -C for Compute -P for Graphics (think Pics) -X for Extreme Memory
5. Pricing
   1. Reserved

      Annotations:

      • -Standard or Convertible -1 to 3 Years contract, and longer term more you save -Requires reserve capacity -Launched within reserved time-window-Matches capacity requirements, with no predictable schedule
      1. Standard

         Annotations:

         • -Up to 75% off On-demand based on upfront payment
      2. Convertible

         Annotations:

         • -Up to 54% off On-demand -Can change Instance attributes if exchange results in Instance of equal or greater value(i.e. CPU intensive -> RAM intensive)
   2. On demand

      Annotations:

      • -Fixed Rate -No Commitment -Linux/sec; Windows/hour -No upfront payments -Short term -Good for unpredictable, non-interruptible workloads
   3. Spot

      Annotations:

      • -Changing price -Set threshold to bid on Instance -Can be taken away without warning if price is over threshold -Urgent need for large compute cap -Flexible deployment -Need very low prices -
   4. Dedicated Host

      Annotations:

      • -Dedicated machine permissible for use only by the owner. The resource is not shared among other AWS users -Used when company policy or licensing doesn't allow multi-tenant virtualization -Up to 70% off On-Demand -Can be purchased hourly
6. Connection Types

   Annotations:

   • -Programmatic    -connect through the console       -command prompt for Mac       -Putty for Windows -from the AWS console