Ceph Pool Modify

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Configure and adjust the CRUSH (Controlled Replication Under Scalable Hashing) rule selection for storage resources within a Ceph cluster.

In QuantaStor, the "Modify Redundancy (CRUSH) Rule Selection" feature is used to configure and adjust the CRUSH (Controlled Replication Under Scalable Hashing) rule selection for storage resources within a Ceph cluster.

CRUSH is a key component of the Ceph distributed storage system that determines the placement and distribution of data across the cluster. It provides a flexible and scalable way to map data objects to storage devices based on predefined rules and policies.

The purpose of the "Modify Redundancy (CRUSH) Rule Selection" function in QuantaStor is to customize and fine-tune the CRUSH rule selection to optimize the placement and redundancy of data within the Ceph cluster. This allows administrators to align the storage infrastructure with their specific performance, capacity, and fault tolerance requirements.

By modifying the CRUSH rule selection, administrators can control aspects such as:

  • Data Placement: Specify how data objects are distributed across OSD (Object Storage Daemon) nodes and storage devices within the Ceph cluster. This includes considerations for performance, load balancing, and data locality.
  • Redundancy and Replication: Define the level of data redundancy and replication required for different types of data and storage pools. This involves selecting the appropriate CRUSH rule for achieving the desired fault tolerance and data protection.
  • Failure Domains: Configure how the cluster handles failures and distributes data across different failure domains, such as racks, servers, or data centers. This helps ensure data availability and resilience in the face of hardware or network failures.
  • Device Selection: Determine the selection and utilization of specific storage devices within the cluster based on their capabilities, performance characteristics, or other criteria defined by the CRUSH rules.

Modifying the CRUSH rule selection in QuantaStor allows administrators to adapt the Ceph cluster's behavior to meet specific performance, redundancy, and availability requirements. By fine-tuning the CRUSH rules, the cluster can be optimized to take advantage of the underlying hardware and network infrastructure while maintaining data integrity and fault tolerance.

It's important to note that modifying the CRUSH rule selection requires a good understanding of the Ceph cluster's architecture, the characteristics of the storage devices, and the desired data placement policies. It's recommended to consult the QuantaStor documentation, Ceph documentation, or seek guidance from QuantaStor support resources for specific instructions and best practices related to modifying CRUSH rule selection within your QuantaStor deployment.

Navigation: Scale-out Storage Configuration --> Scale-out Storage Pools --> Cluster --> Modify Redundancy (CRUSH) Rule Selection... (right click)

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