I have an Open-E file server with 8 SAS disks and a MegaRAID 9271-8i controller and I want to configure two logical RAID10 volumes of identical size. One volume has about 66% write access and 33% read access, the other has only write access (it is a mirror of an identical second file server for failover) of about the same amount.
Currently I have selected the first 4 disks and let the LSI controller config wizard create a RAID10 volume using all of the capacity, then doing the same with the remaining disks for the second volume. But I could also select all 8 disks and create the first volume using half of the capacity, then create the second volume using the same disks and the rest of the capacity.
Is there a performance difference of these two configurations? Or do I have to run tests to find this out?