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.
Yes. Please refer to Regional Products and Services for more details of our product
and service availability by region.
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.
Q: If I transfer data between Availability Zones
using public IP addresses, will I be charged twice for Regional Data Transfer
(once because it’s across zones, and a second time because I’m using public IP
addresses)?
No. Regional Data Transfer rates
apply if at least one of the following is true, but is only charged once for a
given instance even if both are true:
- The other instance is in a different Availability Zone, regardless of which type of address is used.
- Public or Elastic IP addresses are used, regardless of which Availability Zone the other instance is in.
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