AWS Classroom notes 10/Jan/2024

AWS Elastic Block Storage (EBS)

Disk Performance Factors

• IOPS (I/O operations Per Second):
  • number of read or write operations per second
• Throughput
  • total size of data transferred in a second
• Higher the IOPS costlier the disk.

Disks in EC2

• AWS has two types of volumes
  • Elastic Block Storage:
    • They are created from different physical server in aws data center
    • this disk can exist even after ec2 is deleted
    • this disk will remain persistent
    • this disk is used for os disks
    • this can be used for os as well as secondary disks
  • Instance Storage volume
    • They are create from same physical server as ec2
    • this disk cannot exist even after ec2 is deleted
    • this disk will be viped clean (data is erased) every time you stop the instance (ephermeral)
    • this disk cannot be used for os disks and is not supported for all ec2 instance types. this is always secondary disk
• EBS Volume Types:
  • Magnetic
  • HDD
    • Cold HDD
    • Throughput optimized HDD
  • SSD
    • General Purpose
      • gp2
      • gp3
    • Provisioned IOPS
      • io1
      • io2