Hard disk drive (HDD) with acoustic noise detection

A system comprising:

• a plurality of respective hard disk drives (HDDs), each respective HDD among the plurality of HDDs comprising:
• a respective disk;
• a respective write head configured to write data to the respective disk;
• a respective microphone;
• a respective HDD controller configured to process a signal from the respective microphone and to determine noise detected by the respective microphone;
• and
• a respective housing that houses the respective disk, the respective write head, the respective microphone, and the respective HDD controller;
• a cooling system configured to cool the plurality of the HDDs;
• and
• a system controller configured to:
• receive data corresponding to the determined noise detected by the respective microphones of respective ones of HDDs among the plurality of HDDs;
• and
• control a cooling level of the cooling system based on the received data and acoustic noise information associated with each respective one of the plurality of HDDs.