[colug-432] HDD Questions

tom thomas.w.cranston at gmail.com
Thu Sep 8 17:11:45 EDT 2016

On 09/08/2016 11:49 AM, David A. Desrosiers wrote:
> On 9/7/16 3:42 PM, Joshua Kramer wrote:
>> Unless you are doing very heavy video editing (or other
>> I/O intensive work), you won't notice any difference between
>> advertised speed, and the speed you actually get.  Suppose you look at
>> a SSD that is advertised to have the speed of a Ferrari.  You are
>> currently driving a Volkswagen Jetta.  When you hook it up, you find
>> that it has the speed of a Porsche- not quite as fast as a Ferrari,
> Careful... there's a HUGE difference in speed and performance on an SSD
> (more noticeably on NVME than pure SSD) if you plug that drive into a
> SATA port vs. a PCIe port.
> I'm seeing 2.8Gb/sec on-disk, write speed with my NVME drive in the PCIe
> port, and 900Mb/sec for the SAME drive plugged into the SATA port
> (tested with hdparm -Tt).
> It makes an ENORMOUS difference.
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I'm running a 9 year old Dell Inspiron 1520 laptop. Think Toyota 
Corolla. Not fancy but get's the job done. Easy to service. I don't 
think a lightning fast drive is going to get me down the road much 
faster. Please correct me if I am wrong. I am concerned about 
reliability. The Seagate Barracuda 750 GB drive I have had for around 3 
years is showing beginning to fail.


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