RAID 1+0, two volumes
I have 4 8TB disks configured as 2 8TB RAID 1+0 volumes and formatted HFS+. One of the volumes benchmarks about 100MB/s slower than the other (the first of the two is faster). 480MB/s vs ~380MB/s.
Any idea why this might be the case? Shouldn't they have virtually identical performance?
I'm using the beta SoftRAID 6 driver and software.
Attached are pictures of the two volumes.
You have to understand the mechanics on disk drives. The inner volumes are significantly slower.
This is a physics issue.
Yes, fastest, to slowest. Disk manufacturers don't want users to see the performance on the inner tracks. Since users rarely fill disks, they don't.