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A4000: IDE on UW-SCSI?
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Hi Amigans,

i wanna migrate from SCSI (noisy, expensive) to IDE/ATA on my Amiga4000.

I have a Cyberstorm with UW-SCSI on-board and would appreciate any comment/advice on possible hardware solutions.

I already looked at the Acard bridge adapter, but it's not exactly fitting my needs, the description says it has to be plugged right into an IDE HD which means i can only use ONE HD on the SCSI chain (and it would prevent me using further methods on silenting the amchine, e.g. capsulating the drive).
It also sounds a bit silly (only one drive), given the price of that thing.

Next thing i looked at was this adapter, but i dunno if this would help in any way, it's just an adapter and that aforementioned bridge is kinda recomputing with an extra chip on-board, isn't it!?

I know that there is no DMA IDE solution on classics (yet?), but i could use the bandwith of the UWSCSI.

So, what would be your advice/tips/hints?

I don't want to plug it into the slow A4000 onbord IDE and can't use the IOBlix one for known reasons

Thanks in advance


Edited by Raziel on 2007/3/1 22:44:52
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:

Next thing i looked at was this adapter, but i dunno if this would help in any way, it's just an adapter and that aforementioned bridge is kinda recomputing with an extra chip on-board, isn't it!?


Bad link, probably contains session data.

About noisy: ide hds can be pretty noisy too (especially seagate, at least I hear them more loudly than say wd).

Jack

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Re: A4000: IDE on UW-SCSI?
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@Jack

Try again, second and third product from above

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We are in the beginning of a mass extinction.
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:
Hi Amigans,

i wanna migrate from SCSI (noisy, expensive) to IDE/ATA on my Amiga4000.

I have a Cyberstorm with UW-SCSI on-board and would appreciate any comment/advice on possible hardware solutions.

I already looked at the Acard bridge adapter, but it's not exactly fitting my needs, the description says it has to be plugged right into an IDE HD which means i can only use ONE HD on the SCSI chain (and it would prevent me using further methods on silenting the amchine, e.g. capsulating the drive).
It also sounds a bit silly (only one drive), given the price of that thing.

Next thing i looked at was this adapter, but i dunno if this would help in any way, it's just an adapter and that aforementioned bridge is kinda recomputing with an extra chip on-board, isn't it!?

I know that there is no DMA IDE solution on classics (yet?), but i could use the bandwith of the UWSCSI.

So, what would be your advice/tips/hints?

I don't want to plug it into the slow A4000 onbord IDE and can't use the IOBlix one for known reasons

Thanks in advance



Ehh..who's said you can only use one SCSI hd when using an Acard SCSI-->IDE Bridge?
Using one here (the UWSCSI Acard) on my A4000 along with another 68pin LVD SCSI drive, a 50pin DVD ROM with 50pin-->68pin SCSI adapter and a 50pin SCSI cd burner with another 50pin-->68pin adapter

The Acard's are great, using it on my BlizzardPPC SCSI too with a nice silent Samsung Spinpoint 40gig IDE HD :D

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Re: A4000: IDE on UW-SCSI?
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@Amigaz

Err, the other way round

I'd like to scrap the SCSI drives and want to use only
IDE drives. Is that possible with bying one bridge?

How is the bridge being connected?
Plugged right into the drive?

How many IDE device can i plug into the bridge?

Thank you

People are dying.
Entire ecosystems are collapsing.
We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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@Raziel

If you go IDE be prepared for general system slowdowns and disk activity will eat CPU power
There's no DMA IDE on Amiga's that's why most people go SCSI

You can only connect one drive to the Acard so if you connect a beefy IDE drive to it and have your silent machine ;)

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Re: A4000: IDE on UW-SCSI?
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@Amigaz

That's what i meant to find out.

So, i need to use an Acard bridge?
A normal UWSCSI->IDE adapter won't do it?

About the speed, at least the Acard ads say that the IDE drives takes advantage of the SCSI bus in terms of speed.
I knew about the DMA issue on classics. So, that's a backstep then, too?

Hmm, too bad

Maybe, i'll better get me a new and already silent UWSCSI HD and CDRom?

Any objections on that one?

Thank you

People are dying.
Entire ecosystems are collapsing.
We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:
@Amigaz

That's what i meant to find out.

So, i need to use an Acard bridge?
A normal UWSCSI->IDE adapter won't do it?

About the speed, at least the Acard ads say that the IDE drives takes advantage of the SCSI bus in terms of speed.
I knew about the DMA issue on classics. So, that's a backstep then, too?

Hmm, too bad

Maybe, i'll better get me a new and already silent UWSCSI HD and CDRom?

Any objections on that one?

Thank you


Nah, there's other UWSCSI-->IDE adapter out there but harder to find...I know Yamaha made one
The SCSI-->IDE adapter uses all the SCSI features/benefits

There's some more silent 68pin SCSI drives but they're still noisy compared to modern IDE drives.

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Re: A4000: IDE on UW-SCSI?
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@Raziel

Hi!

The Acard adapter on the first link you showed us will work, I have one for 50-pin SCSI that I use in my Amiga on the CD-burner, so I reckon the UW-SCSI one will work also.

The other link doesn't work because it seems to show your shopping cart. We can't see that.

Make a search on the product you want to show us.

I looked for something that had with IDE -> SCSI, but had no luck.

The adapter may seem a little expensive, but it can very well save you money compared to buy a full breed SCSI unit. :)

What may be a problem with the SCSI adapter, and you don't have other units on the chain, is that the adapter doesn't give you term power. But I'm not sure about this. It seems I have that problem here at least with the narrow adapter.

A week ago or so, I exchanged my system to use an IDE drive with 80 GB, and tried to disconnect my noisy UW drive but then I got errors in the transmissions even though everything was terminated as before. With the UW-SCSI connected, it's allmost perfekt (only some glitch sometimes). I solved this by spinning the UW-SCSI unit down by running UnitControl early in the su-s. Not perfect, but good enough for now. I, myself, is a little keen on trying that UW-adapter. :) But the money flow is very low atm, so it has to wait.

Well. Last and most important. The real thing is best of it all even though it has a price tag. Real SCSI is best, has best performance, best reliance, etc.


edit: Btw, Amigaz. I think I use that Yamaha one converter ... That maybe why I can't make it work 100% here. I think I read something that it was more or less made for CD.

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Re: A4000: IDE on UW-SCSI?
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@FihmpenRouk

SCSI-ADAPTER INTERN DB68HP ST / IDC50 ST
SCSI-ADAPTER INTERN DB68HP BU / IDC50 BU
SCSI III / SCA ADAPTER
No information, only the pics...the last one is a SCSIIII and thus out of range, i suppose?

So, to get a few things straight.

1) There is no DMA whatsoever with IDE on classic?
2) SCSI is still the "standard" when it somes to speed?
3) There is nothing "in-the-works" to "cure" No.1?

People are dying.
Entire ecosystems are collapsing.
We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:
@FihmpenRouk

SCSI-ADAPTER INTERN DB68HP ST / IDC50 ST
SCSI-ADAPTER INTERN DB68HP BU / IDC50 BU
SCSI III / SCA ADAPTER
No information, only the pics...the last one is a SCSIIII and thus out of range, i suppose?

So, to get a few things straight.

1) There is no DMA whatsoever with IDE on classic?
2) SCSI is still the "standard" when it somes to speed?
3) There is nothing "in-the-works" to "cure" No.1?


1= Yes
2= Indeed
3=Unfortunately no

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Re: A4000: IDE on UW-SCSI?
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@Amigaz

Thanks

Anyone know of a place which sells UWSCSI drives for a decent price?
Or do i have to pay outrageous 200 Euros up to get one?
Then i'll better to stick to some my SCSI-II drive.

People are dying.
Entire ecosystems are collapsing.
We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:
@Amigaz

Thanks

Anyone know of a place which sells UWSCSI drives for a decent price?
Or do i have to pay outrageous 200 Euros up to get one?
Then i'll better to stick to some my SCSI-II drive.


mm...Ebay, a 18.2gig 10krpm drive is a good choice..think you can get away with around ?30-40

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Re: A4000: IDE on UW-SCSI?
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@Raziel

Ah, okay. The pictures you show are adapters that convert between SCSI systems - not IDE.

I have a converter here that converts from SCA-68pin UW-SCSI to 50 pin narrow SCSI with built in active termination for the upper 8 bits.

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Re: A4000: IDE on UW-SCSI?
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Hmm.. if I use IDE HD with Acard's 68pin adapter with CSPPC UWSCSI, it doesn't do DMA?

With my not-so-scientific measures, it would seem it does - cpu usage is low and transfer rates comparable to fast, native uwscsi drives.

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Re: A4000: IDE on UW-SCSI?
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@quenthal

Quote:

quenthal wrote:
Hmm.. if I use IDE HD with Acard's 68pin adapter with CSPPC UWSCSI, it doesn't do DMA?

With my not-so-scientific measures, it would seem it does - cpu usage is low and transfer rates comparable to fast, native uwscsi drives.


It does ;)

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Re: A4000: IDE on UW-SCSI?
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@Amigaz

Ah, come on, now you left me completely puzzled

Please, answer the following question with a simple YES or NO

An IDE HD connected via an Acard Bridge adapter to the UWSCSI controller that resides on the CyberstormPPC does DMA?

People are dying.
Entire ecosystems are collapsing.
We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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@Raziel

Quote:

Raziel wrote:
@Amigaz

Ah, come on, now you left me completely puzzled

Please, answer the following question with a simple YES or NO

An IDE HD connected via an Acard Bridge adapter to the UWSCSI controller that resides on the CyberstormPPC does DMA?


the answer is YES :)

As I said earlier I have several Acard adapters here in my Amiga's and all do DMA

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Re: A4000: IDE on UW-SCSI?
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@Amigaz

At last

Thanks a lot

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We are in the beginning of a mass extinction.
And all you can talk about is money and fairytales of eternal economic growth.
How dare you!
– Greta Thunberg
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Re: A4000: IDE on UW-SCSI?
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This is how the Acard UWSCSI-->IDE sits on a 40gig Samsung HD I have in my A4000T

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