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RAID-1+0 Performance with SoftRAID 5
Tested with very fast hard drives.
Performance of RAID 1+0
The spike at end has to do with either OS X or drive block mapping behavior and should be ignored.
Performance of a 4-drive RAID-1+0 should be similar to a 2-drive RAID-0 stripe. Performance of a 8-drive RAID-1+0 should be similar to a 4-drive RAID-0 stripe.
The performance is at high levels with both 4 and 8 drive arrays. The decline in drive performance over the capacity is somewhat muted with RAID 1+0 due to some overhead for the RAID.
disktester run-area-test --iterations 5 --test-size 4G --delta-percent 5