Chapter 6. Red Hat Storage Volumes

Volume Types

Distributed

Distributes files across bricks in the volume.

Use this volume type where scaling and redundancy requirements are not important, or provided by other hardware or software layers.

See Section 6.3, “Creating Distributed Volumes” for additional information about this volume type.

Replicated

Replicates files across bricks in the volume.

Use this volume type in environments where high-availability and high-reliability are critical.

See Section 6.4, “Creating Replicated Volumes” for additional information about this volume type.

Distributed Replicated

Distributes files across replicated bricks in the volume.

Use this volume type in environments where high-reliability and scalability are critical. This volume type offers improved read performance in most environments.

See Section 6.5, “Creating Distributed Replicated Volumes” for additional information about this volume type.

Striped

Stripes data across bricks in the volume.

Use this volume type only in high-concurrency environments where accessing very large files is required.

See Section 6.6, “Creating Striped Volumes” for additional information about this volume type.

Striped Replicated

Stripes data across replicated bricks in the trusted storage pool.

Use this volume type only in highly-concurrent environments, where there is parallel access to very large files, and performance is critical.

This volume type is supported for Map Reduce workloads only. See Section 6.8, “Creating Striped Replicated Volumes” for additional information about this volume type, and restriction.

Distributed Striped

Stripes data across two or more nodes in the trusted storage pool.

Use this volume type where storage must be scalable, and in high-concurrency environments where accessing very large files is critical.

See Section 6.7, “Creating Distributed Striped Volumes” for additional information about this volume type.

Distributed Striped Replicated

Distributes striped data across replicated bricks in the trusted storage pool.

Use this volume type only in highly-concurrent environments where performance, and parallel access to very large files is critical.

This volume type is supported for Map Reduce workloads only. See Section 6.9, “Creating Distributed Striped Replicated Volumes” for additional information about this volume type.