1. A storage cluster in a single chassis, comprising: a plurality of storage nodes configured to communicate together as the storage cluster; each of the plurality of storage nodes having one or more storage units; each of the one or more storage units having solid-state storage memory; the plurality of storage nodes configured to distribute user data and metadata associated with the user data throughout the plurality of storage nodes; and a plurality of compute nodes in the single chassis, each of the plurality of compute nodes configured to communicate with the plurality of storage nodes.