[vdr] Re: Cooling HDs in a VDR system - HD sleep modes

["Raimond Laan" <RaimondL@velgen.net>]

Hi,

I'v got a (cheap) fan attached on top of the drive running at 5V. There is
no direct contact with the case to cool the drive. The drive is suspended
between elastic wire. (very silent!!)

Drive is a Samsung SP8004H.

Kind regards,

Ray

----- Original Message -----
From: "Jörg Knitter" <joerg.knitter@gmx.de>
To: <vdr@linuxtv.org>
Sent: Wednesday, March 26, 2003 11:53 AM
Subject: [vdr] Cooling HDs in a VDR system - HD sleep modes


> Hi,
>
> I´ve built a 'silent' VDR system with two hard disks: A 5400 RPM boot HD
> and a Seagate Barracuda HD and which runs at 7200 RPM. The last one is
> currently cooled with an (admitted) cheap HD fan - and cheap means quite
> loud compared to my Super Silent Pro CPU cooler...
>
> As I have set all HDs to go into standby mode with hdparm -s 12 after
> one minute to make the system quiet, I am not really sure if the
> Barracude still needs this additional cooling.
> I know from the past, when 7200 HDs were quite new, that they got very
> hot - and I lost 3 IBM-SCSI-HDs, each after one month, until I finally
> really decided to cool it - then it worked for years... But I also know
> that time and hardware has changed...
>
> Additionally, the Barracuda is only 'active' for a maximum time of 4
> hours for recording or playback, but as I also use (like most of you) a
> desktop case, there is not really much free room for air.
>
> Do you have any experiences on this?
> (How) do you cool your hard disks?
> Are there any circuits around that turn on a HD fan when a HD wakes up
> from standby mode or temperature sensors that control the fan?
> Any further experiences concerning drop outs on recordings if a sleeping
> HD (in my case the boot HD) in the system is being woken up while
> recording?
>
> Thanks for any replys
>
> Jörg
>
>
>
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>
>



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