Various embodiments of the present disclosure disclose a storage system. The storage system comprises: at least one storage device array enclosure, each of the storage device array enclosure accommodating storage devices, which are arranged in columns and have gaps existing between adjacent storage devices; each storage device array enclosure includes a cap for covering accommodated storage devices; the cap includes vents and windshield bars, such that when the cap is in a closed state, the vents abut against an upper surface of the corresponding storage devices and the windshield bars cover the gaps between adjacent storage devices. The design of the cap in the storage system of the present disclosure can ensure that during the maintenance of the storage devices in the storage device array enclosure, the cooling airflow is capable of passing through the vents of the opened cap and then entering inside of another storage device array enclosure above the maintained storage device array enclosure, so as to effectively improve thermal performance inside the storage device array enclosure.