1. A method of backing up data stored on a cluster shared volume (CSV), comprising: storing on the cluster shared volume a snapshot of the cluster shared volume; determining which cluster servers are available to participate in backing up the cluster shared volume, wherein determining which cluster servers are available to participate in backing up the cluster shared volume includes reading a preferred server order list (PSOL) associated with the cluster shared volume; assigning to each of one or more cluster servers available to participate in backing up the cluster shared volume a task to back up a corresponding assigned portion of the snapshot; and monitoring the respective assigned tasks to completion, wherein the cluster servers have shared access to the snapshot as stored on the cluster shared volume and each is configured to perform the task assigned to it in parallel with any other cluster servers assigned to back up other portions of the same cluster shared volume snapshot.