Going SCSI - a few questions! :)

[d0pefish]

Hi guys,

I have an Amiga 4000 desktop that I'm souping up as part of a fun project. I'm thinking of ditching the slow IDE controller in favour of the nicer SCSI one on my CyberStorm PPC.

I haven't really used SCSI before so I'm not too sure what bits I should be getting. I intend to compile another patched ROM and remove the scsi.device, then load it into my Algor Pro flash ROM. Any problems I should look out for?

Which hard disks and CDRWs/DVDs/CDROMs can I plug straight into the CyberStorm, and are there any specific models of CDRW/DVD/CDROM that I should look out for that will fit nicely inside the A4000 case without squishing all the cables into the PSU?

I hear it's possible to boot from CDROM using the CyberStorm - does this mean that it is also always available and mounted from switchon?

Do those nice compact round IDE cables exist in a SCSI form?

Finally, I also use MorphOS PowerUP. Is it just plug 'n play with the CyberStorm's SCSI, and should I be able to boot up as normal without any extra drivers and so on?

Thanks for any help guys - I've tried to do some research of my own and have been reading the manual, but I thought I might be able to get some better advice from people who have used SCSI+Amiga before.

Cheers! :-D

[d0pefish]

Thanks for the advice.

Would using an adapted 50pin SCSI CD drive have any effect on the transfer speed of other devices on the chain, or is there no difference whatsoever?

I presume CD drives rarely reach the full capacity of UW-SCSI speed - is that right?

Also, just thinking about >4GB limits - if I use SmartFileSystem on a big hard disk on cybppc.device, will I still need patches to see over 4GB? I have OS3.9 but I'm thinking of when I boot from an old floppy; would I be able to access partitions over the 4GB boundary without having to run any patches?

I have heard of people using Quantum Atlas drives with their Amigas - are these drives good? How loud are they?  :-)

THanks again for the help! :-D

[d0pefish]

 :-o  :-o  :-o  :-o  :-o

WOW!!

What an awesome post! Thankyou SO much for taking the time to offer your help; it was very helpful indeed and I really appreciate it! :-D  :-D And no, it didn't confuse me. :-)

Thankyou guys, I have a much better idea of what I need now. :-)

[d0pefish]

Hehe - yes, definately good advice about leaving the cover off.  :-D I've lost several clumps of hair from my head in the past for reasons related to having to dismantle fiddly computer cases several times over... :madashell:

Anyway, I've just been playing with the CSPPC's SCSI options menu. Inside there, it seems I can set options for each individual unit, including:

LUNs: NONE up to 8
Transfer Offset: 1 up to 15
Sync Period: 1MHz up to 20MHz
ASynchron, Synchron, or ASync/Synchron
8-Bit bus, 16-Bit bus, or Auto buswidth
Reselection, No Reselection, or Auto Reselection
...and then stuff about mounting.

So is this the individual configuration of each device on the chain that allows different types of device to coexist without decimating the performance of the whole setup that you talked about?

Thanks once again! :-)