A storage block is a physical storage resource that can be used by application instances. The storage block hardware consists of a set of two storage controllers and one or two storage sleds, all housed in a storage chassis. The Ignite management console displays a representation of each storage block, including controllers and sleds, on the Infrastructure > Hardware page.
In Ignite, a storage block must be assigned to a storage pool for it to store application instances. In Ignite, the storage pool is where you allocate storage capacity for an application. The storage pool also contains a single template store that can be used by all virtual datacenters connected to the storage pool. You can monitor template store usage on the details page of a storage pool in the Storage Usage Distribution chart.