Depends which version of Linux you install. Most are pretty good at recognising SCSI cards, and should identify your disc as sda. Most distros come with a partitioning tool which makes it a piece of cake to carve up your installation.
You can simply boot from the CD (after making the CD bootable in the BIOS, of course!), and any Linux distro worth its salt will just load up and launch the partitioning tool automagically.
Windows NT (2k, XP, etc), on the other hand, requires that you install a SCSI driver early on the setup process by pressing F6 at the appropriate moment and installing the driver from a floppy. It then may or may not blue screen after the installaion has appeared to be successful. Oh, and will only install if it can find a disk that has already been partitioned!
I talk from experience of "old" SCSI cards (generally over 2 years...) - newer cards are probably much better.
Hope this helps - and enjoy your Linux experience! CitrixEngineer@yahoo.co.uk