EBS storage devices

    1. One Instance per volume (except for multi-attach IO1/IO2)

    2. GP2 IO will increase as the disk size increases.

    3. GP3 IO can increase as the disk size increases.

    4. Are locked to single Availability Zone.

    5. To migrate EBS to another AZ we have to take snapshot and restore to another AZ

    6. EBS backups eat into your IO and should not be done during peak hours.

    7. Root EBS volumes by default get terminated with instance.

EFS storage devices

    1. EFS can be mounted across AZ and to 100s of instances

    2. Perfect for shared file systems

    3. Only supported on Linux Instances.

    4. EFS has a higher price than EBS

    5. Can leverage Storage Tiers to reduce costs.

Instance Store storage devices

    1. Directly connected to Instance

    2. Not shared in anyway

    3. Loss of instance results in loss of Instance Store