What is maximum writing speed of the Seagate ST500DM002-1BD142 ATA HD?

The best way to find out the maximum writing speed of your Seagate ST500DM002-1BD142 ATA HD is to run writing tests with a single large block of different block sizes:

sqlio -LS -kR -i1 -f1 -t1 -s30 -p0 ...

If we run SQLIO with above options and different block sizes, we should be able to find the maximum writing speed:

             Throughput   Throughput   Latency
Block Size      MBs/sec      IOs/sec        ms
----------   ----------   ----------   -------
      -b16        30.43      1947.49         0
      -b64        55.27       884.34         0
     -b256        86.51       346.05         2
    -b1024       114.20       114.20         8
    -b4096        95.54        23.88        41
   -b16384        72.14         4.50       221
   -b65536        91.94         1.43       695
  -b262144        94.62         0.36      2704

As you can see, the maximum writing speed, 114.20 MBs/sec is reached with a block size of "-b1024", or 1 MB.

Comparing to the maximum reading speed of 216.56 MBs/sec, the maximum writing speed of 114.20 MBs/sec is about 2 times slower.

⇒ I/O Tests on Flash Drives

⇐ ST500DM002-1BD142 ATA HD - Maximum Reading Speed

⇑ I/O Tests on Hard Disks (HD)

⇑⇑ SQLIO Disk I/O Benchmark Test Tutorials