A few questions about scsi

[Sgraffite]

Someone offered to buy my computer so I sold it for $550.

Celeron 600 @ 900 / 100mhz fsb
128mb pc66 ram
27.5gb and WD hard drive
46.1gb IBM hard drive
Adaptec 2940uw
Pioneer 6x dvd scsi
Plexwriter 8/2/20 scsi
Hercules GeForce2 MX 32mb
SB Live Gamer 5.1
3com 3c905TX 10/100

Anyways, I think he got a pretty good deal, not that that is relevant to the subject or anything. But now I have to build a new one, ad I have a quite a few questions on scsi.

I was thinking about going all scsi, but are there any good fast scsi burners now that plextor stopped making them?

Are there any good DDR AMD mobos with built in Adaptec 29160 scsi? Or is it better to buy the pci card?

Is there any advantage to scsi anymore? Is there a noticable difference in processor utilization when burning with a scsi or ide burner on a modern system?

What is the difference between SCA, LVD, 68 pin, 80 pin, and all those other scsi connectors? On my system all I had was 50 pin and the drives had built in termination. From the looks of it 68 pin LVD is the most common, but I could be mistaken.

Is there any way to get a 72gb scsi hard disk for less than $300?

If you have any other info that might be useful, please post.

Thanks in advance.

 

[SCSIRAID]

1) I havent seen any mobo's with Adaptec down. Most of what I see has LSI down. LSI makes a good part.

2) SCA and 80pin are the same thing and intended for usage in a hot swap backplane. 68 pin is intended for cable usage and is what you want. LVD is a signalling mode introduced in Ultra 2. It enables the higher speed transfers. The older mode was called 'single ended' which is limited to Ultra rates. Note that the terminations are different between the two. Look for multimode terminators which support both SE and LVD signalling. 50pin is 'narrow' 8 bit mode and devices using it are typically non-LVD. You wont see any new or recent 50 pin HDD's AFAIK. For best results dont mix LVD and non-LVD on the same bus.

3) I believe Plextor is still making SCSI burners but just doing IDE first. I have a Yamaha.

4) SCSI is a superior interface to IDE but the question is do YOU need it. If you are going to attach a bunch of devices and do a lot of parallel IO then SCSI is quite nice. If you have one HDD and one CDRW then dont bother. The system you detail looks like a reasonable candidate for SCSI joy. DMA mode IDE and 'Burnproof' has made the IDE environment much more friendly than in the past.

 

[mrCide]

Tyan Thunder K7 has

Integrated SCSI (optional)
Adaptec AIC-7899W controller
Dual-channel Ultra160 SCSI support
160MBps maximum data throughput
Supports up to 15 LVD SCSI devices per channel
Channel A: 68-pin connector
Channel B: 68-pin connector


If that helps. but at ~$400~ it's expensive. Also I think the best scsi drive you can find for under $300 is the fujitsu maj3364mp at west-tech.. I just installed mine and so far it's running nice.

 

[Sundog]

<< Is there any way to get a 72gb scsi hard disk for less than $300? >>


Hahahaha, that is a good one! The answer is probably not. Although I did see a 10K rpm Cheetah 73GB going for $400 yesterday, which is very rare.