Storage sizing

One of the most important factors in designing a cluster is to determine the storage requirements (sizing). Ceph Storage is designed to scale into petabytes and beyond.

The following examples are common sizes for Ceph storage clusters.

  • Small: 250 terabytes

  • Medium: 1 petabyte

  • Large: 2 petabytes or more

Sizing includes current needs and near future needs. Consider the rate at which the gateway client will add new data to the cluster. That can differ from use-case to use-case. For example, recording 4k videos or storing medical images can add significant amounts of data faster than less storage-intensive information, such as financial market data. Additionally, consider that the data durability methods, such as replication versus erasure coding, can have a significant impact on the storage media required.

Reference

For more information, see the following:

  • Hardware

  • For more information, see the Sizing IBM Storage Ceph chapter, within the IBM Storage Ceph Concepts and Architecture Guide Redpaper publication.