R730 - PERC H730 mini - Error! Only even numbers of physical disks are allowed in this configuration.

Hello,

I'm out an space on our server and I'm trying to add a new SSD to our RAID 10 configuration. When reconfiguring using OpenManage under Virtual Disk I get the following error... Error! Only even numbers of physical disks are allowed in this configuration. Is there a way around this or a different way to add my new SSD to the RAID?

Thanks