I ordered a new server with four 2TB drives for a client. At first I considered arraying them as RAID5 with a hot spare, but reconsidered when the benefits of OBR10 (one big RAID10) came to light. For this client, RAID10 is an appropriate balance between performance, speed and disk space.
When booting into the “WebBIOS” for the RAID card, it wasn’t readily apparent how to configure RAID10. For those in a similar boat, here’s how to do it.