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

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
• Snapshot can do the following actions
  • Create a Volume for snapshot in same or different AZ.
  • Copy the Snapshot to a different Region.
• 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.