Instance Store (ephemeral storage) :

● It is ideal for temporary block-level storage like buffers, caches,

temporary content

● Data on an instance store volume persists only during the life of the

associated instance. (As it is volatile storage - lose data if stop the

instance/instance crash)

● Physically attached to ec2 instance - hence, the lowest possible

latency.

● Massive IOPS - High performance

● Instance store backed Instances can be of maximum 10GiB volume

size

● Instance store volume cannot be attached to an instance, once the

Instance is up and running.

● Instance store volume can be used as root volume.

● You cannot create a snapshot of an instance store volume.

EBS :

● Persistent Storage.

● Reliable & Durable Storage.

● EBS volume can be detached from one instance and attached to

another instance.

● EBS boots faster than instance stores.