[mythtv-users] Buffering LiveTV data to save hard drive wear?

Kevin Kuphal kkuphal at gmail.com
Tue Jul 15 16:15:40 UTC 2008


On Tue, Jul 15, 2008 at 3:23 AM, Peter VanDerWal <peter at vanderwal.us> wrote:

> I've been reading recently that using ordinary hard drives in DVRs can
> cause them to wear out rapidly.  It has something to do with the heads
> constantly moving back and forth between reading and writing data streams
> while watching LiveTV, etc.
>
> Does MythTV buffer this data at all?  I.e. does it keep 3-4 seconds worth
> of data in memory so ther hard drive does constantly have to switch
> between writing ther data and going back and reading it three seconds
> later?
> If it doesn't do this, is there anyway I can set this up?
>
> I know the HDD has a built in buffer, but I don't think it's big enough to
> hold 3-4 seconds worth of data,or what ever the minimum is when watching
> LiveTV.
>
> On a related note, does anyone know of a good HDD optimized for DVR use?
> Preferably a quiet one?


Seagate (which is the only mfg I'll buy for the warranty) makes a DB35 line
specifically for DVRs

http://www.seagate.com/www/en-us/products/consumer_electronics/db35_series/

Whether that truly is necessary for Myth or makes any difference, I doubt
it.  My drives don't seem to wear out any faster with Myth than any other
system I've used.

Kevin
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