我都覺得值得探討同埋想學野
呢個UNAS炒嘅case雖然近因係user on9,但佢奶野嘅位係可以發生響其他有準備嘅人身上
斷電時間太長 = UPS唔夠做
要依賴graceful shutdown而無user interaction = 要行NUT (U記唔支援) 或用佢隻DC PDU(但都係唔識shut)
咁其實係咪仲有條路可以行響部行NUT server嘅機行script叫佢SSH入去隻UNAS度shutdown?
至於用咩fs可唔可以有防禦又係考慮之一
例如好多人想隻UNAS行ext4咁係咪姐係犧牲平時bit rot個風險去換power failure時唔會write hole?

講開,我就算響S記,用NVMe write cache有時都驚有咩炒都會令到restore加大難度;但個write performance優點太大,唔想放棄佢 (成team人日撚日抄細files同incremental backup)