Chapter 5. Developer previews

This section describes developer preview features introduced in Red Hat OpenShift Container Storage 4.8.

Developer preview feature is subject to Developer preview support limitations. Developer preview releases are not intended to be run in production environments. The clusters deployed with the developer preview features are considered to be development clusters and are not supported through the Red Hat Customer Portal case management system. If you need assistance with developer preview features, reach out to the ocs-devpreview@redhat.com mailing list and a member of the Red Hat Development Team will assist you as quickly as possible based on availability and work schedules.

Data segregation per hosts group

Workloads can use specific isolated IO paths and spread across specific storage nodes to limit the impact in case of partial cluster failure or a noisy neighbour and isolate tenants.

For more information, see knowledge base article.

Regional disaster recovery

Red Hat OpenShift Container Storage provides multi-cluster asynchronous replication of storage volumes across two OpenShift Container Storage clusters serving two Openshift Container Platform clusters. Any stateful application, including its stateless counterparts need some preparation prior to deploying the same on a peer cluster.

Object Storage Device weight and pod affinity configuration

You can now efficiently use partitioned disks with a non OpenShift Container Storage device to maximize capacity utilization without blocking that workload. You can assign an object storage device (OSD) to all the solid state drives (SSDs) on a host machine including a partitioned device that has a dedicated partition for the operating system. You can reduce the load on the OSD for better efficiency as it shares the same physical device. To reduce the load, you can configure the OSD weight and pod affinity parameters in the Storage Cluster CR.

For more information, see knowledge base article.

Flexibility in OpenShift Container Storage component deployment

Flexibility in component deployment is now possible with the capability to disable the components multicloud object gateway, RGW, and CephFS during deployment. It is also possible to disable or enable these components after the OpenShift Container Storage deployment. This flexibility helps to reduce resource costs when using Amazon S3.

For more information, see knowledge base article.