>As I'm also thinking of a fast scsi card (AHA U2W) here's my question - is >there a scsi card which has 80 pin connection? Or are they all 68 pin? All >the cards I have seen are 68 pin which do not supply the power which comes >instead from the Mobo harness. 80 pin connectors supply the power as well.
Drives with 80-pins are SCA drives. They are meant to go into a backplane. All you need to do to install a drive is to screw the drive onto a drive adapter (a little piece of plastic or metal similar to the ones used to mount drives in your Mac's bays, actually) then insert the drive into the backplane. The backplane provides power and each slot in the backplane is given a SCSI id, so the drive is given that id when it is inserted. So, in short, no, there are no host adapters that have 80-pin connectors. I have a backplane attached to a host adapter via a 68-pin cable. The backplane requires it's own power supply. I can show you pictures if you need some visual explanation. > And another question - as the LVD drives have to be on a separate >chain for LVD to work - is the internal scsi O chain unaffected by the >card? - giving two fast scsi's (0 and 1) and an LVD chain? Yes. You will have three independent SCSI buses. I recommend getting a Adaptec 2940U2W. I had one lying around, and I heard that you can flash them with the Mac BIOS and turn them into a Power Domain 2940U2W (the Mac version of the former). It took two minutes to flash the BIOS, SCSI drives attached to it are bootable, and it works like a charm. The PC version of this card is significantly cheaper than the Mac version, just like everything else, it seems. Again, if you want more info, let me know. _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
