[CentOS] Re: A question about RAID and partitions

> 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.