$ sudo rapiddisk --list rapiddisk 6.0 Copyright 2011 - 2019 Petros Koutoupis    List of RapidDisk device(s): RapidDisk Device 1: rd0 Size (KB): 2097152    List of RapidDisk-Cache mapping(s): RapidDisk-Cache Target 1: rc-wa_md0 Cache: rd0 Target: md0 (WRITE AROUND)