AWS Service Limits

When you create an AWS account, AWS sets default service limits on certain resources on a per-region basis. Before launching instances, check the limits to determine if any should be increased especially for EBS, EC2 instances, and VPC elastic IP address limits. Plan to request limit increases in advance of the time you need them.

AWS limits how much EBS storage an account can use. The default value is 20 TiB in each region. Before launching a Teradata Database instance, you may need to increase the EBS limits for the General Purpose (SSD) volume storage. You must increase the EBS limits in your default region as well as in any other regions where you want to launch additional Teradata Database AMIs.

Before launching a multi-node Teradata Database instance, increase the instance limits to sufficiently meet your needs. For larger multi-node systems, the launch may fail after you increase the EBS and instance limits because AWS does not have sufficient resources available in your region and availability zone at the time you launched. To solve this issue, try launching again later.

Teradata recommends increasing the instance limits to one more than the size of the system to support the Node Failure Recovery process. If you want to leave the downed node running for diagnostic purposes, Teradata recommends increasing the instance limits even further to two or more.

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