I know RAID 1 is mirror, RAID 10 is RAID 0+RAID 1. Yet I found that with same 8 disks on IBM Server, I can format RAID 10 for those 8 disks or RAID 1 for 8 disks. Both options allows to use 8/2 = 4 disks’ spaces. In Mega RAID Controller software, we can see RAID 10, there’re 4 couples of disks in 1 logical disk while RAID1 includes all of 8 disks in 1 logical disk.
So I don’t know what does RAID1 for 8 disks in this case mean ? And how about the performance comparing to RAID10 ?