🚀 go-pugleaf

David Maynard wrote:
> spodosaurus wrote:
> 
>> David Maynard wrote:
>>
>>> T Shadow wrote:
>>>
>>>> "Je�us" <_._@ii.net> wrote in message
>>>> news:11etpaj8l7em16@corp.supernews.com...
>>>>
>>>>> spodosaurus wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> My wife is going to be taking video clips from VHS and DVD and 
>>>>>> editting
>>>>>> them into compilations for lectures (output to DVD, VHS, and for
>>>>>> playback from a laptop, depending on what AV equipment the lecture
>>>>>> theatres have). I'm wondering how I should arrange her IDE drives for
>>>>>> best performance:
>>>>>> 1x 40GB Seagate HDD
>>>>>> 1x 120GB Western Digital HDD (about to be installed so she can 
>>>>>> work on
>>>>>> the video files on this drive)
>>>>>> 1x CDROM
>>>>>> 1x Pioneer DVR107D DVD burner
>>>>>>
>>>>>> What are your thoughts on which IDE ribbons these drives should be
>>>>>> placed on? I was thinking about a hard drive and an optical drive on
>>>>>> each ribbon but realised that the ribbons probably wouldn't reach. I
>>>>>> could try and add a PCI IDE expansion card and see how that goes 
>>>>>> (I have
>>>>>> one that was going to go into our backup/file server, but it could go
>>>>>> into her computer).
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> I don't think any given combo will make a huge difference...
>>>>> Although I would try to keep the two HDDs on separate channels if
>>>>
>>>>
>>>>
>>>>
>>>> practical.
>>>>
>>>>> As you say though, the ribbons may not be long enough.
>>>>> I wouldnt worry about it too much.
>>>>>
>>>>>
>>>>
>>>> I think you are correct about HDDs on separate channels . When I had my
>>>> system just doing analog capture I didn't notice having a problem 
>>>> with both
>>>> drives on the same channel but when I added a HDTV card it couldn't 
>>>> keep up.
>>>> Putting the "capture" drive on it's own channel rectified the 
>>>> situation. IOW
>>>> you don't want the O/S and capture competing for the channel.
>>>> YMMV
>>>>
>>>>
>>>
>>> Bingo.
>>>
>>> IDE can't overlap requests to two devices on the same channel but you 
>>> can if they're on separate channels. I.E.
>>>
>>> Two on same channel---
>>> readA  writeB readA  writeB readA  writeB readA  writeB
>>>
>>> Two on separate channels---
>>>
>>> readA  readA  readA  readA
>>>       writeB writeB writeB writeB
>>>
>>>
>>>
>>>
>>>
>>
>> And this goes even for the current 80-wire IDE ribbons? Sorry, too 
>> tired to google for it right now :-)
>>
>> Ari
> 
> 
> 
> Yes. 80 wire doesn't change how IDE works, it's just noise rejection for 
> higher data rates.
> 
> 

Well, I've got an extra generic PCI IDE card now, so hopefully I can get 
it working on the WinXP system without too much fiddling and move each 
drive to a separate channel. I'm concerned that the generic IDE card 
will reduce drive performance though.

Ari


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