You can expand StorageGRID to increase storage capacity, to add metadata capacity, to add redundancy or new capabilities, or to add a new site. The number, type, and location of the nodes you need to add depends on the reason for the expansion.
Adding storage capacity
When existing Storage Nodes become full, you must increase the storage capacity of your StorageGRID system.
Adding metadata capacity
Object metadata capacity can be consumed faster than object storage capacity in some cases, so you might need to add Storage Nodes to increase metadata capacity even if sufficient object storage capacity remains.