1. A method, comprising: at one or more data management computers: obtaining, from a virtual system manager that manages one or more virtual machines, both (a) particular virtual machine data that relates to a particular virtual machine, and (b) an indication that the particular virtual machine uses a particular volume of data storage managed by a storage controller that manages one or more storage units and that is separate from the virtual system manager; obtaining, from the storage controller, both (a) particular storage data that relates to the particular volume, and (b) an indication that the particular storage data relates to the particular volume; correlating the particular storage data to the particular virtual machine data based on both the indication that the particular virtual machine uses the particular volume and the indication that the particular storage data relates to the particular volume; causing display of performance information related to the particular volume that is based at least in part on the particular storage data.