Example embodiments describe a method performed by one or more processors. The method may comprise sending over a network, to a software component installed at a remote data source, a request to download data stored at, or in association with, the remote data source, the software component being configured to access performance data at said remote data source. In response to sending the request, the method may comprise receiving from the software component at least an indication of the performance data accessed by said software component, determining whether to proceed with the data download request or to modify the data download request based on the received performance data.