dd

Test of Write
# time dd if=/dev/zero of=/BiO/dd_test count=1000 bs=1024k
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 1.15074 s, 911 MB/s

Test of Read
# dd if=/BiO/dd_test of=/dev/null count=1000 bs=1024k
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 0.218885 s, 4.8 GB/s