Random Reads (64 KiB)
The results for 64 KiB reads follow the lead of the 4 KiB results: Ubuntu LVM is the leader by a neck at 498.1 IOPS and all but Windows Storage Spaces are clustered together, trailed slightly by Windows software RAID (487.9 IOPS). Windows Storage Spaces is behind at 442.5 IOPS, about 89% of the leader’s score, comparable to the divergence in the 4 KiB test.
| I/O Method | IOPS | s |
|---|---|---|
| Ubuntu/HW | 493.9 | 1.33 |
| Ubuntu/LVM | 498.1 | 3.75 |
| Ubuntu/MD | 495.5 | 1.57 |
| Windows/HW | 497.4 | 3.05 |
| Windows/SS | 442.5 | 2.13 |
| Windows/SW | 487.9 | 2.46 |
Random Write (64 KiB)
Again, as in the 4 KiB write test, hardware RAID outperforms by a wide margin with Windows at 180.3 IOPS and Ubuntu at 179.5 IOPS. Windows software RAID and Ubuntu mdadm still have the middle (121 and 113.5 IOPS, respectively), but Windows Storage Spaces (20.2 IOPS, 11% of the leader) has dropped down behind even Ubuntu LVM (39.6 IOPS). There was a large increase in performance variance for these two slower methods as well.
| I/O Method | IOPS | s |
|---|---|---|
| Ubuntu/HW | 179.5 | 0.94 |
| Ubuntu/LVM | 39.6 | 14.04 |
| Ubuntu/MD | 113.5 | 0.51 |
| Windows/HW | 180.3 | 1.27 |
| Windows/SS | 20.2 | 16.79 |
| Windows/SW | 121.0 | 0.62 |