EC2 Instance Store Volumes Flashcards
What do Store volumes provide?
It provides block storage devices that can be attached to EC2 instances.
What are Store volumes connected locally and physically to?
EC2 hosts and EC2 instances.
What can access Store volumes?
Instances in the host where the Store volumes exist can access the volume.
What can you say about the performance of Store volumes in general?
They provide the highest storage performance in the whole AWS (much higher than EBS volumes).
Based on what are Storage volumes billed?
They are not billed independently because they are included in the EC2 instance price. Take it or lose it.
When can you attach Storage volumes to an instance?
At launch.
What happens to the Storage volumes attached to an instance if that instance moves to another EC2 host?
The data stored initially in the Storage volume is lost.
When should you never use Store volumes?
When the data should be persisted.
In which cases can an instance be moved from one EC2 host to another one?
- instance is stopped and started
- host undergoes AWS maintenance
- change the type of an instance
- physical hardware fails
The number, size, and performance of instance store volumes vary based on…
The type of instance used.
Do all EC2 instances have the possibility to have instance volumes?
No, not all.
How much throughput can a D3 instance provide?
4.6 GB/s
How much throughput can an I3 instance provide?
16 GB/s of sequential throughput.
