Amazon EC2 | Availability Zones

Question 1

Can I configure the reverse DNS record for my Elastic IP address?

Availability Zones

Amazon EC2 | Compute

Answer 1

Yes, you can configure the reverse DNS record of your Elastic IP address by filling out this form. Note that a corresponding forward DNS record pointing to that Elastic IP address must exist before we can create the reverse DNS record.

Question 2

How isolated are Availability Zones from one another?

Availability Zones

Amazon EC2 | Compute

Answer 2

Each Availability Zone runs on its own physically distinct, independent infrastructure, and is engineered to be highly reliable. Common points of failures like generators and cooling equipment are not shared across Availability Zones. Additionally, they are physically separate, such that even extremely uncommon disasters such as fires, tornados or flooding would only affect a single Availability Zone.

Question 3

Is Amazon EC2 running in more than one region?

Availability Zones

Amazon EC2 | Compute

Answer 3

Yes. Please refer to Regional Products and Services for more details of our product and service availability by region.

Question 4

How can I make sure that I am in the same Availability Zone as another developer?

Availability Zones

Amazon EC2 | Compute

Answer 4

We do not currently support the ability to coordinate launches into the same Availability Zone across AWS developer accounts. One Availability Zone name (for example, us-east-1a) in two AWS customer accounts may relate to different physical Availability Zones.