Update storage docs based on gaps identified

[prrao87]

Address findings from the storage docs-gap audit and clarify OSS vs Enterprise scope.

Architecture page

• Called out that plain S3 is single-writer-safe and concurrent writers need the DynamoDB commit store, with deeplinks to the relevant configuration sections.
• Added a "File-format choices that interact with the backend" section explaining how new_table_enable_v2_manifest_paths, new_table_enable_stable_row_ids, and new_table_data_storage_version map onto backend choice.

Configuration page

• Added an Enterprise scoping note up top: this page is OSS-only; in Enterprise the cluster owns storage credentials, and federated databases use namespace-driven credential vending. Links out to the Enterprise quickstart and Azure deployment guide.
• Made connection-vs-table storage_options override semantics explicit ("inherit from connection, override per key").
• Documented the initial_storage_options() / latest_storage_options() accessors on AsyncTable and the deprecation of storage_options().
• Noted that the new_table_* options are evaluated only at table creation and do not rewrite existing tables.
• Extended the DynamoDB section with required IAM actions and a dynamodb_endpoint example for LocalStack-style local dev.
• New "Server-side encryption with KMS" section covering aws_server_side_encryption / aws_sse_kms_key_id and the required KMS IAM actions.
• Documented the actual Azure SAS-token keys (azure_storage_account_name, azure_storage_sas_token) with a snippet, instead of mentioning "SAS tokens" generically.
• Removed the StorageOptionsProvider "Python-only" section. Cross-checking against lancedb confirmed storage_options_provider= is not part of the Python public API; the only path is namespace_client=, which belongs in dedicated namespace docs rather than a half-baked replacement here.

Snippets / tests

• New runnable test snippets for the local DynamoDB endpoint, SSE-KMS, and Azure SAS examples; regenerated MDX exports.
• Removed the broken provider snippet (and its now-unused mock parameter).

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated (UTC)
lancedb-bcbb4faf	🟢 Ready	View Preview	May 6, 2026, 6:12 PM

💡 Tip: Enable Workflows to automatically generate PRs for you.