ASROCK X79 Extreme11 Installation And Configuration Manual page 9

If you selected RAID 0 (Stripe), use the up or down keys to
select the stripe size for your RAID 0 array then press <Enter>.
The available values range from 8 KB to 128 KB. The default
selection is 128 KB. The strip value should be chosen based
on the planned drive usage.
‧ 8/16 KB - low disk usage
‧ 64 KB - typical disk usage
‧ 128 KB - performance disk usage
After you set disk block size, press <Enter> to set disk
Capacity.
After setting up Capacity, please press <Enter>.
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