Windows Storage Spaces. IIRC, a Tiered Storage Space means that evicted-to-tape files that get OpenFile'd, get copied in full back to the hot disk before the Op

Windows Storage Spaces. IIRC, a Tiered Storage Space means that evicted-to-tape files that get OpenFile'd, get copied in full back to the hot disk before the OpenFile completes, such that any IO then proceeds from the hot disk, not from tape.