@olivier Here are my results (Windows Server 2008, LVM, Raid 10, 8x 15K spinning rust) --
Sequential Read (Q= 32,T= 1) : 416.270 MB/s
Sequential Write (Q= 32,T= 1) : 412.617 MB/s
Random Read 4KiB (Q= 32,T= 1) : 14.298 MB/s [ 3490.7 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 17.564 MB/s [ 4288.1 IOPS]
Sequential Read (T= 1) : 321.305 MB/s
Sequential Write (T= 1) : 273.068 MB/s
Random Read 4KiB (Q= 1,T= 1) : 1.218 MB/s [ 297.4 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 12.264 MB/s [ 2994.1 IOPS]
Test : 1024 MiB [C: 75.9% (56.9/75.0 GiB)] (x5) [Interval=5 sec]