CoreWeave AI Object Storage Setup: LOTA, Writes, Archive

This post details the configuration of CoreWeave AI Object Storage (CAIOS) features: LOTA caching for accelerated reads, cross-region write acceleration, and the Archive storage tier for cost optimization. It provides Python (boto3) and CLI examples for pre-staging LOTA cache with `head_object` calls, enabling cross-region writes via `upload_file` to a bucket, and writing directly to Archive using `ExtraArgs={'StorageClass': 'STANDARD_IA'}` or enabling automated archiving with `cwic cwobject bucket update`. It also explains how to read from the Archive tier and copy objects to the STANDARD class.