[lug] my "no-data-movement" file-copy attempt

Doug Pintar ratnip3 at gmail.com
Tue Oct 18 21:35:15 MDT 2011

----- Original Message ----- 
From: "Lee Woodworth" <blug-mail at duboulder.com>
To: "Boulder (Colorado) Linux Users Group -- General Mailing List" 
<lug at lug.boulder.co.us>
Sent: Tuesday, October 18, 2011 9:31 PM
Subject: Re: [lug] my "no-data-movement" file-copy attempt

> On 10/18/2011 09:34 AM, Zan Lynx wrote:
>> Beyond that, I am not surprised that a 250 GB drive is half as fast as
>> the 500 GB drive. One hard drive performance parameter is the density of
>> data on a track. A drive with double the data density will have double
>> the transfer rate, if the spin rate and track spacing are the same.
> That's an interesting idea. Another variable could be the data placement
> on the drive. If tracks near the spindle have a different transfer rate
> than tracks at the edge of the platter the placement could make a 
> difference.
> Anybody know how modern drives are?
As far as I know, modern drives put more sectors per track as you move 
toward the outer tracks, so the transfer rate remains relatively constant.
Doug Pintar 

More information about the LUG mailing list