AWS Classroom Series – 27/Aug/2020

Amazon EBS Volume Types

  • Harddisk technology:

    • Magnetic
    • HDD
    • SSD
  • Amazon supports all of the above mentioned hard disk technologies

  • We will be focusing on

    • HDD
    • SSD
  • EBS Volume Types

    • SSD

      • General Purpose SSD (gp2)
        • Description: Balanced performance with wide variety of workloads
        • Durability: 99.8-99.9%
      • Provisioned IOPS SSD
        • io2
          • Description: High performance ssd for mission critical data intensive workloads
          • Durability: 99.999%
        • io1
          • Description: High performance ssd for mission critical data intensive workloads
          • Durability: 99.8-99.9%
    • HDD

      • Throughput Optimized HDD:

        • Description: Low Cost HDD Volumes designed for frequently data accessing workloads (Streaming)
        • Durability: 99.8-99.9%
      • Cold HDD

        • Lowest cost HDD volume designed for infrequently accessed workloads
        • Durability: 99.8-99.9%
  • Disks Performance is measured in IOPS (number of operations per second)

  • EBS Volume Pricing:

    • In AWS there can be change in price with change in regions
    • Pricing
    • Lets create a pricing estimate from here
  • Partitioning Scheme will have impact on Storage capacity Refer Here

Creating and attaching a Volume to already existing ec2 instance

  • Lets create an ubuntu instance in aws Preview
  • Now lets try to add the volume to existing instance
  • Create a volume. Preview Preview Preview Preview Preview
  • Now lets attach this volume to the ec2 instance created Preview Preview
  • Now lets login into ubuntu & verify if the disk is attached to the instance Preview Preview

EBS Snapshots

  • Backup of EBS volumes are called as EBS Snapshots
  • EBS snapshots are stored internally in Amazon S3
  • Snapshots are incremental backups
  • Lets try to create a backup (EBS Snapshot) for the newly attached disk Preview Preview Preview Preview Preview
  • Snapshot can do the following actions
    • Create a Volume for snapshot in same or different AZ.
    • Copy the Snapshot to a different Region. Preview
  • Non Backup Scenarios:
    1. I have an ebs volume in mumbai region in az (ap-south-1b) and i want to create another ebs volume with same data in different az (ap-south-1a)
      • Create a snapshot of the ebs volume from az (ap-south-1b)
      • From the snapshot create a ebs volume in ap-south-1a az
    2. I have an ebs volume in mumbai region in az (ap-south-1b) and i want to create another ebs with same data in different region oregon (us-west-2)
      • Create a snapshot of ebs volume from az (ap-south-1b)
      • Now copy the snapshot to oregon (us-west-2)
      • From the copied snapshot create an ebs volume
    3. I have an ebs volume in mumbai region in az (ap-south-1b) and my friend wants to create the same ebs volume in his aws account.
    4. I don’t want to take snapshots manually how do i automate?
  • Next Steps:
    • What do i mean by incremental point in time backups.
    • How are ebs snapshots created.

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