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From: Eric Gisin on 6 May 2008 13:21
"Mike Ruskai" <BUTthannydI(a)DONTearthlinkLIKE.netSPAM> wrote in message
news:jq6v14t5k6lmr6cej7n9rc7rbssjvjdfb5(a)4ax.com...
>
> I actually have three DVD drives, and I can burn to two at once, provided that
> one is the burner attached to the motherboard's single IDE channel.
>
> It's not infrequent that I'd want to burn three discs at a time, but I can't
> due to the limitations of the controller.

PCI Latency Tool may help.
Make sure no devices' latency is too high (cause bus hogging),
and that the IDE devices are similar (64 is a common value).

From: Squeeze on 6 May 2008 13:31
Mike Ruskai wrote in news:jq6v14t5k6lmr6cej7n9rc7rbssjvjdfb5(a)4ax.com
> On or about Mon, 05 May 2008 11:46:30 -0400 did Yousuf Khan <bbbl67(a)yahoo.com>
> dribble thusly:
>
> > Mike Ruskai wrote:
> > > I need a PCI card with two independent IDE channels to drive two DVD drives.
> > >
> > > And I emphasize *independent*, because I currently have a Sil 0680-based card
> > > with two IDE channels, but they are not independent. They are mutually
> > > speed-limiting.
> > >
> > > For example, when ripping two DVDs, if one is only able to read at 3x, the
> > > other is also limited to 3x, even though alone it would be able to read at 5x.
> > > If one runs into a read error, and loops through a few retries, the other
> > > drive is paralyzed.
> > >
> > > This also prevents both from burning reliably at the same time.
> >
> > I know this is the low-tech solution, but why not just do a
> > store-and-burn? That way each drive will be run at different times, and
> > you won't have any data contention problems.

> I think you misunderstood.

Oy, watch it bud, this is Yousuf you're talking to.
CSIPHS KOOK of the year award nominee.

From: Mike Ruskai on 5 May 2008 03:29
On or about 4 May 2008 02:21:41 GMT did Arno Wagner <me(a)privacy.net> dribble
thusly:

>Previously Mike Ruskai <BUTthannydI(a)dontearthlinklike.netspam> wrote:
>> I need a PCI card with two independent IDE channels to drive two DVD drives.
>
>> And I emphasize *independent*, because I currently have a Sil 0680-based card
>> with two IDE channels, but they are not independent. They are mutually
>> speed-limiting.
>
>> For example, when ripping two DVDs, if one is only able to read at 3x, the
>> other is also limited to 3x, even though alone it would be able to read at 5x.
>> If one runs into a read error, and loops through a few retries, the other
>> drive is paralyzed.
>
>> This also prevents both from burning reliably at the same time.
>
>> Just to be clear, both DVD drives are the master IDE devices on separate
>> cables, connected to separate channels on the card.
>
>> So, anyone know of a card with truly independent channels?
>
>This sounds strange. Maybe your bottleneck is the driver instead?

I'm pretty sure it's the hardware. It's two IDE channels, but they're sharing
one bus connection, which I saw confirmed somewhere that was selling a Sil
0680 card.

>If not, I have made good experience with the Promise non-RAID
>cards. With one drive on each channel, you can even do
>softrware RAID on both drives without trouble.

I'll have a look at them. Thanks.
From: Yousuf Khan on 5 May 2008 11:46
Mike Ruskai wrote:
> I need a PCI card with two independent IDE channels to drive two DVD drives.
>
> And I emphasize *independent*, because I currently have a Sil 0680-based card
> with two IDE channels, but they are not independent. They are mutually
> speed-limiting.
>
> For example, when ripping two DVDs, if one is only able to read at 3x, the
> other is also limited to 3x, even though alone it would be able to read at 5x.
> If one runs into a read error, and loops through a few retries, the other
> drive is paralyzed.
>
> This also prevents both from burning reliably at the same time.

I know this is the low-tech solution, but why not just do a
store-and-burn? That way each drive will be run at different times, and
you won't have any data contention problems.

> Just to be clear, both DVD drives are the master IDE devices on separate
> cables, connected to separate channels on the card.
>
> So, anyone know of a card with truly independent channels?

How about getting a SATA DVD burner? All SATA drives are their own
masters. DVD burners are cheaper than any external IDE controller solution.

Yousuf Khan
From: Eric Gisin on 5 May 2008 10:42
I have no problems copying at 4X between DVD on the same Intel IDE channel.
That's 6MB/s, it should go faster. Are your applications using SPTI, not ASPI?

"Mike Ruskai" <BUTthannydI(a)DONTearthlinkLIKE.netSPAM> wrote in message
news:pqvp14h2m643ojskvgs6im0bfkubsf9d1c(a)4ax.com...
>I need a PCI card with two independent IDE channels to drive two DVD drives.
>
> And I emphasize *independent*, because I currently have a Sil 0680-based card
> with two IDE channels, but they are not independent. They are mutually
> speed-limiting.
>
> For example, when ripping two DVDs, if one is only able to read at 3x, the
> other is also limited to 3x, even though alone it would be able to read at 5x.
> If one runs into a read error, and loops through a few retries, the other
> drive is paralyzed.
>
> This also prevents both from burning reliably at the same time.
>
> Just to be clear, both DVD drives are the master IDE devices on separate
> cables, connected to separate channels on the card.
>
> So, anyone know of a card with truly independent channels?

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