Abstract: Approaches provide for management of resources such as data storage devices. For example, such approaches include providing an indexing service to reliably index data that may be accessed and used over one or more networks by any of various users, applications, processes, and/or services. As one example, data storage devices that store data may in some embodiments be co-located at a geographical location, such as in each of one or more geographically distributed data centers, and the application(s) that use a volume stored on a data storage device may execute on one or more other physical computing devices. An indexing service can operate on more or more of the data storage devices or portions of the data storage devices such as a directory, to manage and index data. The indexing service can monitor activity on a data storage device and any additions, deletions and/or modifications to data (e.g., documents, files, etc.