I was found this:
http://www.acard.com/eng/product/scside.html

I want one for an symbios 895 UWSCSI 80MB/S, the UWSCSI is only 40MB/S. I see the LVD, but I don't know what is LVD and if I will get 80MB/S performance with one of these adaptors...

Any can help me with this mess, please?

@timofonic

This seems to be an interesting solution if you want many low-cost HDs without buying many IDE controlers.

The things to consider now:
- Is there any known (annoying/dangerous) bugs?
- Do they need special drivers?
- Are they worth it? (price versus quality)

Fred

[ Edited by ChatDEau on 2004/8/26 10:01 ]

You WILL NOT get full speed. They work okay, but the speed will not be good at all. Most of the low price ones are pure crap. The good ones are just about as much as a new IDE drive so I dont see why anyone would use them at all.

If you use LVD cables and LVD (Low Voltage Differential IF I remember right)ACTIVE terminator (really expensive..) you can reach the 80MB/S SCSI standard.
Without LVD every SCSI controller stops at 40 MB/s speed.

symbios 895 is Ultra2 wide SCSI not UltraWide thus explaining 80MB/sec instead of 40

starting with Ultra2, LVD signals are used to transmit datas. twisted wires 68 pins ribons needed

concerning IDe to Ultra2 wide adapters, they work and cost around 100 eur each one for good quality ones (as acill said)

advantage is to connect cheap IDE drives to SCSI controller, and the adapter can be reused when your hard disk die...
and with large capacity hd it's really less expensive than SCSI drives...

but SCSI drives are generally 5 year guarantee and are faster and more robust...for 40GB using of SCSI drives is cheaper... starting at 80GB IDE+adater is cheaper... but now it's your choice...

My advice : find a good scsi controller, and TEST it well under OF and morphOS with a SCSI hard drive and cdrom, if everythng is ok, then continue, if not, look for another scsi controller (my 895 has problems, looking for another model)

I'm using Maxtor Atlas 10K4 73GB 10k RPM SCSI drive.

I was sended the money by paypal for a symbios 895 yesterday to magentic, lets see if he reply me and if he sended. H said that the symbios 895 cards that he has runs perfectly on Pegasos with linux and morphos

I want to get a lot of space for storing use, I'm planning to buy two 160GB Western Digital IDE disks and maybe more in the future, but I'm afraid because about the data loss because the majority of IDE disks sucks a lot and I'm quite disgusted with the IDE technology (eats CPU, not constant data-transfer...).

So I want to know prices about SCSI disks for the Symbios 895 controller, and see what I can buy. And I like to know about converters for use IDE disks on my very soon future controller, aswell recommendations of the better IDE disks available, recommendable brands and others...


[ Edited by timofonic on 2004/8/28 4:33 ]

Quote:
The difference between EIDE and SCSI HDs is like night and day.

I have played with a Ultra320 combo (Controller and HD) and it's sweet.

Yes

I'm thinking on has one 40gb SCSI HDD for normal use and some very big
HDD IDE disks with converters for storage... I'm still thinking and
don't wory to wait some more time if saving money I can get real SCSI
and not use IDE technology at all...

PS: What about serial SCSI?

It's Serial Attached SCSI... (SAS) and it's not supported at all

As laire told me again yesterday, SCSI support won't be improved anymore due to lack of time... so if anyone wants to write a new symbios.device :))

40GB SCSI, it doesn't exist... it's 36GB :)

@FALCON1

Ok, sorry...

That's sad, I prefer SCSI, we need more good coders for mos core, maybe genesi will can get some programmers soon :.)

Quote:

me, too...

but we have to stop dreaming.... nobody can replace laire and you'll need very experienced coder to do such device...