mseas-data2(dri_nascar)% ./run_dd_test.sh 
Running dd test, trial 0
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 870.359 s, 4.9 MB/s
Running dd test, trial 1
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 927.039 s, 4.6 MB/s
Running dd test, trial 2
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 877.755 s, 4.9 MB/s
Running dd test, trial 3
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 888.806 s, 4.8 MB/s
Running dd test, trial 4
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 887.767 s, 4.8 MB/s
Running dd test, trial 5
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 883.362 s, 4.9 MB/s
Running dd test, trial 6
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 902.124 s, 4.8 MB/s
Running dd test, trial 7
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 894.112 s, 4.8 MB/s
Running dd test, trial 8
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 881.2 s, 4.9 MB/s
Running dd test, trial 9
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 910.847 s, 4.7 MB/s
Running dd test, trial 10
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 1065.93 s, 4.0 MB/s
Running dd test, trial 11
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 928.891 s, 4.6 MB/s

Mean (excl. min and max): 4.78 MB/s