Was ist unterschied zwischen JBOD und RAID?

Im Studium haben wir das Thema RAID behandelt und ich habe nicht wirklich verstanden, was Unterschied zwischen JBOD und RAID ist. In der Vorlesung wollte ich es nicht fragen aber wir haben demnächst Klausur und würde mich freuen, wenn jemand mir kurz erklären kann, was der Unterschied ist?

RAID
JBOD
Datenspeicher
Festplatte

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