Miguel Medalha wrote:
have raid 0 and raid1 on the same drive isn't going to gie you anything since the raid 1 will "slow" the other raids down.
You are assuming that both arrays will always be concurrently accessed but that may not be the case. More yet: the configuration may have been studied in such a way that concurrent access is rarely the case.
just partitioning your disks will incur a performance penalty up to 30%.