[CentOS] "Shortcut" for creating a software RAID 60?

Hello all,

Testing stuff virtually over here before taking it to the physical servers.

I found a shortcut for creating a software RAID 10 ("--level=10"), device in
CentOS 6.

Looking at the below, I don't see anything about a shortcut for RAID 60.
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/htm
l/Storage_Administration_Guide/s1-raid-levels.html

Is RAID 60 an uncommon RAID-configuration, as compared to RAID 10, and this
might be why it's missing?

Not too cumbersome to first create two RAID 6-arrays, then add them to a
RAID 0, but it does take some extra time.
Besides, I haven't found any way to fail a member disk, as is possible to do
when using RAID level 10.

Am I missing something here?

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