[mythtv-users] Backend hardware advice - Power usage - RESULTS

[dave johnson]

well, wouldn't you know... marketting pukes rear their ugly heads again:

[root at edison 3ware]# ./tw_cli
//edison> info c0 stagger
/c0 Spinup Stagger Time Policy (sec) = Not Supported

//edison> info c0 spinup
/c0 Disk Spinup Policy = Not Supported

//edison> fuck

Error: (CLI:041) Invalid shell command.
//edison> quit
[root at edison openfiler]#

typical over-promising 3Ware.

hey, on this note... does anybody have direct knowedge of power supplies that are specially designed to withstand short startup load bursts, but overall have much lower 100% duty capacity?  i just hate pouring energy out unused ps capacity.

-=dave

----- Original Message ----- 
From: "dave johnson" <DJ4904 at hotmail.com>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>
Sent: Friday, August 04, 2006 11:04 PM
Subject: Re: [mythtv-users] Backend hardware advice - Power usage - RESULTS


I didn't think "power up in standby" was even part of the ATA spec but from the marketing blurp, it looks like the 7506-12 should support it:

http://www.3ware.com/products/pdf/7506-US.pdf

I'm going to do some more investigation on this... perhaps it's a setting within the controller, or a jumper, or something that just isn't set.

-=dave

----- Original Message ----- 
From: "John Drescher" <drescherjm at gmail.com>
To: "Discussion about mythtv" <mythtv-users at mythtv.org>; <drees76 at gmail.com>; <DJ4904 at hotmail.com>
Sent: Thursday, August 03, 2006 1:37 PM
Subject: Re: [mythtv-users] Backend hardware advice - Power usage - RESULTS


>> Why 2 PSUs? What PSU specifically? Most PSUs are horribly inefficient,
>> as in 50-60% efficient. A good PSU these days is over 80% efficient so
>> this will save you 25-50w. Something like the Seasonic S12-330 will
>> have plenty of power for your system and has high efficiency.
>> http://www.silentpcreview.com/article596-page1.html
>>
> 
> Hmm. There is one thing to think about is the 8 to 10W is only when
> idle, when the drives spin  up this number will be much larger. I am
> not sure a single 330W will be enough to handle that unless he
> staggers spinup on the drives. When I think of it I believe the 3ware
> card will do that so I guess that would work if this feature was
> enabled.
> 
> John
>
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