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dd if=/dev/zero of=/dev/sdd bs=1G count=1 oflag=direct
copied, 5.99952 s, 179 MB/s
Total time run:         30.611813
Total writes made:      1031
Write size:             4194304
Object size:            4194304
Bandwidth (MB/sec):     134.719
Stddev Bandwidth:       41.304
Max bandwidth (MB/sec): 292
Min bandwidth (MB/sec): 104
Average IOPS:           33
Stddev IOPS:            10
Max IOPS:               73
Min IOPS:               26
Average Latency(s):     0.473359
Stddev Latency(s):      0.197987
Max latency(s):         1.18969
Min latency(s):         0.0875198

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