Calculating Disk Transfer Rate MBps RRS feed

  • Question

  • I know this isn't Microsoft related, but I am hoping someone who knows a bit of maths could show me the exact calculation and formula to work out how fast my Internal Data Rate would be (sometimes referred to as Media transfer rate) in MBps. what I want to achieve is what Western Digital publishes about its 2TB Red drive as an example:

    Drive Transfer Rate 600 MBps (external)
    Internal Data Rate 145 MBps

    I am looking at 652589-B21 which is a HP 900GB 6G SAS 10K RPM SFF SC Enterprise Drive, it has the following specifications but I am struggling to work out how to get to the internal data rate MBps from this

    Capacity 900,185MB

    Height 0.62 in (15.6 mm)
    Width 2.98 in (75.7 mm)
    Depth 4.67 in (118.7 mm)
    Single Track 0.21 ms
    Average seek 3.8 ms
    Full-Stroke 7.4 ms
    Rotational Speed 10,000 rpm

    Physical Configuration:

    Bytes/Sector 512
    Logical Blocks 1,758,174,768

    If I can learn this once I can at least apply the same calculation to other hard drives, I would appreciate your help with this.

    many thanks


    Wednesday, February 26, 2014 11:32 AM