You can expand the storage capacity of virtual Storage Nodes that have fewer than 16 storage volumes by adding additional storage volumes. You might need to add storage volumes to more than one Storage Node to satisfy ILM requirements for replicated or erasure-coded copies.
The underlying storage of a Storage Node is divided into a fixed number of storage volumes. Storage volumes are block-based storage devices that are formatted by the StorageGRID Webscale system and mounted to store objects. Each Storage Node can support up to 16 storage volumes, which are called object stores in the Grid Management Interface.
Each object store corresponds to a mount point on the same Storage Node. That is, the object store with an ID of 0000 corresponds to the /var/local/rangedb/0 mount point.
Before adding new storage volumes, use the Grid Management Interface to view the current object stores for each Storage Node as well as the corresponding mount points. You can use this information when adding storage volumes.