RAID 10 configuration settings with different disks

I have just started to configure a server with 4 SSDs.

Each pair of drives has the same capacity, but not the same on the 4 drives.

I want to use RAID 10, and I tried different configurations in the Megaraid BIOS to see what would be the best configuration, without leaving any unused space, to get the most out of the array.

This is the configuration I plan to use. Can any one tell me if I should better combine the records in a different way? I've tried to have disks having the same capacity in the same range, but Megaraid would say that the configuration would consist of about 44 GB of unused space, so I guess it would be better.

Ideas?

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