On Thu, Jul 3, 2014 at 2:00 PM, Roger Heflin <rogerhef...@gmail.com> wrote:
> > > It will almost certainly be fine, at worst it may be a bit slower > under the right benchmark, but unlikely to be anything that matters > unless you need it as fast as it possibly can be. > > The underlying platter data rate is almost certainly less than 3Gbps. > Check the manufacturer's web site I would suspect even if that is a > *FAST* spinning disk it is still below 200MB/second (2Gbps). It > will be listed as a range, the lower number is the speed on the inside > of the disk and the higher is the outside of the disk. Rotational > speed is constant, but the amount of data on a given track is more on > > > the outside as there is more area to encode bits and the disks place > sectors based on constant area. > > I also looked at similar analyses. It turns out that the combinations of sata ii enclosure, sata ii controller do indeed throttle the wire speed of the data transfer from a sata iii drive to the system. But by most analyses, it has no effect on data throughput because mechanical drives are still a long ways from outstripping the 3gbps wire speed. Cheers, JD
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