OCI Object Storage

OCI Object Storage is a highly durable, scalable, and cost-effective storage service for unstructured data. It is the equivalent of AWS S3 or Azure Blob Storage.

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What is Object Storage?

Object storage stores data as objects within buckets. Each object consists of:

• Name — a unique key within the bucket (e.g., reports/2024/summary.pdf)
• Data — the file content (up to 10 TB per object)
• Metadata — system and custom key-value metadata

Object storage uses a flat namespace with key prefixes simulating folders.

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Namespaces and Buckets

Object Storage Namespace

Every tenancy has a unique namespace — an automatically generated string that acts as a top-level container. All bucket names are unique within a namespace.

Buckets

A bucket is a container for objects:

• Region-specific — created in a single region
• Unlimited objects — no limit on the number or total size
• Two visibility levels — private (default) or public

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Storage Tiers

OCI Object Storage offers multiple tiers: