Which solution will meet these requirements MOST cost-effectively?
Replace all the data nodes with UltraWarm nodes to handle the expected capacity. Transition the input data from S3 Standard to S3 Glacier Deep Archive when the company loads the data into the cluster.
Reduce the number of data nodes in the cluster to 2 Add UltraWarm nodes to handle the expected capacity. Configure the indexes to transition to UltraWarm when OpenSearch Service ingests the data. Transition the input data to S3 Glacier Deep Archive after 1 month by using an S3 Lifecycle policy.
Reduce the number of data nodes in the cluster to 2. Add UltraWarm nodes to handle the expected capacity. Configure the indexes to transition to UltraWarm when OpenSearch Service ingests the data. Add cold storage nodes to the cluster Transition the indexes from UltraWarm to cold storage. Delete the input data from the S3 bucket after 1 month by using an S3 Lifecycle policy.
Reduce the number of data nodes in the cluster to 2. Add instance-backed data nodes to handle the expected capacity. Transition the input data from S3 Standard to S3 Glacier Deep Archive when the company loads the data into the cluster.
Explanations:
While using UltraWarm nodes can help reduce costs, transitioning all input data to S3 Glacier Deep Archive immediately may not align with compliance requirements, as the data is needed for 1 month in the OpenSearch cluster before deletion. Additionally, replacing all data nodes with UltraWarm nodes may not provide sufficient performance for the read-only analysis during that month.
This option reduces costs by decreasing the number of data nodes and using UltraWarm nodes to handle the expected capacity. Transitioning input data to S3 Glacier Deep Archive after 1 month using an S3 Lifecycle policy ensures compliance with data retention requirements, as the data remains accessible during the analysis period.
Although this option incorporates cold storage nodes for further cost savings, it complicates the architecture unnecessarily. Transitioning indexes from UltraWarm to cold storage may not be needed for the given scenario. Additionally, deleting the input data from S3 after 1 month conflicts with the requirement to retain a copy of all input data.
While reducing data nodes and using instance-backed data nodes can manage costs, transitioning input data to S3 Glacier Deep Archive immediately might not comply with data retention policies. The data needs to remain available for analysis for one month before deletion, making this option less suitable.