On 17/11/24 11:54, Chris Adams wrote:
Once upon a time, Stephen Morris<steve.morris...@gmail.com> said:
     To test my hard disk performance I have run Kdiskmark and used
the Real World Performance Profile. For its sequential read
performance it is showing around 156 MB/s on my ST3000DM007-1WY1
(3TB Seagate Barracuda), which given that device support 1/3/6 Gb/s
I/O speeds and the device is plugged into a 6Mb/s Sata port on the
motherboard, is very poor performance.
That's a misunderstanding of how things work.  The SATA port speed is
just an upper-bound on transfer, but has nothing to do with how fast a
device can actually read data (similar to having a 1G network card and
even Internet service doesn't mean sites will serve data to you at 1G).
Traditional spinning hard drives typically do top out in the
neighborhood of 150 MB/s... and in fact, the official spec from Seagate
for that drive is an average read rate of 156 MB/s.
If that is the case why does the specs for that device under performance say it will support speeds of 1Gb/s, 3Gb/s and 6Gb/s.

regards,
Steve



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