* Re: [gentoo-user] Re: Hard drive RPMs and data speed.
@ 2011-10-27 16:24 99% ` Volker Armin Hemmann
0 siblings, 0 replies; 1+ results
From: Volker Armin Hemmann @ 2011-10-27 16:24 UTC (permalink / raw
To: gentoo-user
Am Donnerstag 27 Oktober 2011, 13:09:17 schrieb Nikos Chantziaras:
> On 10/27/2011 11:15 AM, Dale wrote:
> > Howdy,
> >
> > I'm wanting to get a hard drive that is pretty good size. I'm looking
> > for about 1 to 2TBs or so. Thing is, a lot of them seem to be 5900 or
> > even 5400 rpm drives. I realize that the data on there is packed pretty
> > tight so I want to ask a few people that may have one or more of these
> > things a few questions. Are they as fast as a slower RPM drive?
>
> I assume you meant to say "as fast as a faster RPM drive". No, of
> course not. If we're speaking about the same capacity and amount of
> platters, of course. If we're not, then yes, they can be as fast
> because of the higher data density.
>
> > Would
> > they be fast enough to play HD videos and such? I have quite a few 1080
> > HD videos. I don't want the drive to cause issues.
>
> The transfer speed required for playing HD videos is virtually zero.
> 1080p video compressed using an 8mbps rate require 2MB/s. This can be
> done even with the slowest drive from 10 years ago. Today's slowest
> drive are able to play about 40 or 50 of those HD video simultaneously.
> So the answer is yes. They can play HD video :-)
>
> Most of those 5900/5400 disks are meant for pure data storage. The
> lower RPM is used to market them as "green and silent", meaning they
> don't consume much power and aren't noisy. Installing your OS on them
> though isn't going to give you good speed. They have good transfer
> rates, but their access times usually suck.
>
> > Can someone that has one or more of these post their hdparm -Tt results?
> > Different speeds would be great too. I'd like to compare what a 5400rpm
> > drive would do compared to a 7200rpm drive.
>
> Simply Google around for benchmarks of the drivers you're interested in.
> Note that is in area where it doesn't make any real difference that
> the benches or reviews you find are performed under MS Windows. The
> results are applicable to every OS.
>
> As a rule of thumb when buying drives: if you want to install software
> on it, buy an 7200RPM drive with good access times. Of course they're
> more expensive If you just want to store all your downloaded HD porn
> and music collection on it, a silent 5400RPM drive is a good choice.
>
indeed. Additionally they don't get really warm. Which reduces the overall
thermal load in the case.
One important thing:
most if not all 2TB drives have 4K sectors, which means you have to be
carefull while partitioning those beasts.
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2011-10-27 8:15 [gentoo-user] Hard drive RPMs and data speed Dale
2011-10-27 10:09 ` [gentoo-user] " Nikos Chantziaras
2011-10-27 16:24 99% ` Volker Armin Hemmann
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