HDD access time.

[Ivenesco]

All HDD (7200, SATA) has access time close to 8ms, but I found strange thing. I have standard drives (2 seagates 7200.10 in RAID 0), and I've wrote application to access to small part of file on my HDD. Access to one file, and get 400 bytes (I tried many files, all the same result), takes... 0ms. More; I've wrote loop, to access different parts of this file, and it gets 9ms for 100 different parts! It's like 0,09 ms for each! I think, there is no mistake: time is in 'ms', not 's', parts are different, not from RAM, and I don't have SSD Maybe someone can tell me, why the 'access time' is about 8ms then?

Module Module1

    Sub Main()
        Dim stopw As New Stopwatch
        stopw.Start()
        Dim strContent As String = Space(400)
        For i As Integer = 1 To 100
            Dim FileNum As Integer = FreeFile()
            FileOpen(FileNum, "Any File Here", OpenMode.Binary, OpenAccess.Read)
            FileGet(FileNum, strContent, i * 1000)
            FileClose(FileNum)
        Next
        stopw.Stop()
        Console.WriteLine(strContent.Length)
        Console.WriteLine("Time : " & stopw.ElapsedMilliseconds & " ms")
        Console.Read()
    End Sub

End Module