EC2 Instance Store Volumes Flashcards

1
Q

What do Store volumes provide?

A

It provides block storage devices that can be attached to EC2 instances.

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2
Q

What are Store volumes connected locally and physically to?

A

EC2 hosts and EC2 instances.

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3
Q

What can access Store volumes?

A

Instances in the host where the Store volumes exist can access the volume.

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4
Q

What can you say about the performance of Store volumes in general?

A

They provide the highest storage performance in the whole AWS (much higher than EBS volumes).

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5
Q

Based on what are Storage volumes billed?

A

They are not billed independently because they are included in the EC2 instance price. Take it or lose it.

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6
Q

When can you attach Storage volumes to an instance?

A

At launch.

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7
Q

What happens to the Storage volumes attached to an instance if that instance moves to another EC2 host?

A

The data stored initially in the Storage volume is lost.

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8
Q

When should you never use Store volumes?

A

When the data should be persisted.

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9
Q

In which cases can an instance be moved from one EC2 host to another one?

A
  • instance is stopped and started
  • host undergoes AWS maintenance
  • change the type of an instance
  • physical hardware fails
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10
Q

The number, size, and performance of instance store volumes vary based on…

A

The type of instance used.

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11
Q

Do all EC2 instances have the possibility to have instance volumes?

A

No, not all.

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12
Q

How much throughput can a D3 instance provide?

A

4.6 GB/s

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13
Q

How much throughput can an I3 instance provide?

A

16 GB/s of sequential throughput.

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