Examples described herein include a system for storing data. The data storage system stores data in one or more storage locations of a storage drive and generates context information that identifies the data associated with each of the one or more storage locations. The context information is stored in a data buffer, and may include at least one of: an index node, a file block number, or a generation count. Further, the data buffer may be a FIFO circular buffer. The data storage system then uses the context information in the data buffer to verify the data stored in the one or more storage locations during an idle time of the storage drive.