1. A management system for a multi-tier electronic data storage system, comprising: a computerized data storage manager that: accesses a data storage transaction to be serviced by a device in a plurality of storage devices arranged in the multi-tier electronic data storage system; selectively provides information about the data storage transaction to one or more members of a plurality of data movement recommenders; performs a data movement action for a member of the plurality of storage devices based, at least in part, on a data movement recommendation received from a member of the plurality of data movement recommenders and a credibility of the member of the plurality of data movement recommenders associated with the data movement recommendation, where the credibility is based at least in part on a measure of a value, a worth, an efficacy, or a utility of a previous recommendation received from the recommender to the data storage manager; determines an impact of the data movement action on the multi-tier electronic data storage system; and stores data relating the data movement action, the impact of the data movement action, and the data movement recommendation, a computerized data movement recommender adapter that selectively manipulates the credibility of the member of the plurality of data movement recommenders associated with the data movement recommendation based, at least in part, on the impact of the data movement action, and a computerized data storage manager adapter that selectively collectively manipulates the credibility of members of the plurality of data movement recommenders.