Teradata Cloud Solution: Security, Backups, Sizing and More on AWS

The basic architecture is the same. u003cbru003eu003cbru003eThe database software is unchanged. Teradata has been adapted to the infrastructure of AWS.u003cbru003eu003cbru003eOn an on-premises Teradata, all services are executed on hardware servers. Each node runs on a computing instance (a virtual server) in the AWS cloud.u003cbru003eu003cbru003eThis means certain limitations (BYNET is not running on Infiniband in AWS) and new previously unavailable features.u003cbru003eu003cbru003eWhile an on-premise Teradata system is optimized for IO throughput, this is not true in the AWS Cloud.

EC2 instances provide the nodes. Data is stored in Elastic Block Stores (EBS). u003cbr/u003eu003cbr/u003eTeradata uses only SSD in the cloud to optimize IO throughput (in principle, hard disks would also be provided).

Fallback Protection is activated if at least two nodes exist.u003cbr/u003eu003cbr/u003eThe EBS is automatically replicated within the availability zone. This is equivalent to mirroring data (Raid 1).u003cbr/u003eu003cbr/u003eBackups can be created on the S3 file system.u003cbr/u003eu003cbr/u003eThe data on an EBS is also stored encrypted.

u003cbr/u003eCompute nodes (EC2 instances) can be exchanged (upscaling), or Instances can be added (outscaling).u003cbr/u003eu003cbr/u003eAdding storage space is associated with the usual problems of a shared-nothing system. This is one of the reasons why Teradata has introduced the MAPS architecture. u003cbr/u003eu003cbr/u003eThe MAPS architecture makes it no longer necessary to redistribute data as soon as storage space is increased, but this process can be delayed.u003cbr/u003e u003cbr/u003eNevertheless, Teradata can keep up with the elasticity of modern cloud databases like Snowflake, which scales immediately.u003cbr/u003e

These are available but no longer necessary in AWS. u003cbru003eu003cbru003eSince instances can be booted, the so-called Node Failure Recovery Feature exists. A computing instance is started as soon as a node crashes, and the Elastic Block storage from the failed node is coupled to the new node.

u003cbr/u003eThe Base license has no workload management; the Advanced license only has Teradata Integrated Workload Management (TIWM). u003cbr/u003eu003cbr/u003eOnly the Enterprise License comes with TASM.