OpenStack Object Storage (Swift) Essentials

Storage policies

Storage policies allow the user to create multiple object rings and use them for different purposes based on the level of importance of the data. Some factors that will be considered while implementing storage policies are the number of replicas, performance required from the ring, disk affinity for the ring, and so on.

We are going to explain the concept of storage policies using an example of bank documents. Some documents are critical for the operation of a bank, and others are not so critical. We can use a storage policy with a higher number of replicas to store the critical documents, database, and so on.

We can use SSD disks in the object ring to store documents that need to be retrieved without any delay (performance-oriented ...