IRIX is SGI's own variation of UNIX (which come in several different varieties, one of them being Linux). SGIs come with a GUI (Graphical User Interface) similar to X-Windows. Because its called X-"WINDOWS" doesn't mean it is anything like Microsoft Windows. Its graphical, it has 'windows' with stuff in it, and it has files and folders. The similaries stop there. There is no such thing as Plug & Play, no simple control panel. If you want to make a system change, in stead of going to device manager, you go to the UNIX Shell. Which at first glace reselmbles the old DOS Prompt (except its far more unintuitive than that). Now its time to start issueing more cryptic commands to try to get very expensive and hard to find peripherals (because just any old peripheral wont work on an SGI) to work.
Heres what I went through the other night getting a Zip Drive to work on my friends O2:
First, he purchased a SCSI Zip 250. The 250mb models do not work. He returned it and went to get a 100mb model. But he couldn't find a SCSI 100 anywhere (i think they dont make them anymore). All he could find was the USB 100. USB does not work on an SGI. So I let him borrow my old SCSI Zip100. After that, we had to spend $40 on 2 adapters to plug in that zip (luckily he already had the $50 cable needed for the scsi-3 connector on the rear of the O2). IRIX automatically recognizes this (and only this) very old zip drive. The same thing happens with the Jazz Drives.
Heres a little test for you. Get on the internet and look for a scanner that supports the IRIX OS. If you happen to find one, compare the price to an equivalent scanner for Windows.
In retort to the person talking about networking and multiprocessor systems...Back in the 70's, 80's and early to mid '90s, UNIX was king of the net. Now that Windows has matured as an OS, it is quickly taking over the networking community. I went to a school with about 60 SGI O2s all networked. Many projects were lost and corrupted because of this network.
It is incredibly easier to administer a WindowsNT/2k network than a UNIX network. And a PROPERLY managed windows network is faster than a sloppy, cryptic UNIX one.
For the single computer, HOME user/hobbiest/student/professional, a windows workstation is the way to go. I can't see anyone who has WORKed in both enviroments saying anything different.
If you're a big studio and can purchase a whole bunch of SGIs to setup a network just for Maya, XSI, and rendering, and then buy a whole bunch of G4s to do your video and post, and then some PCs, just for the hell of it, and a large, skilled IT staff...then go go for it! Otherwise, for just one machine you will not be happy with your O2 (especially if you have friends doing 3D and other stuff on their PCs).
PS
i love unix
((( DePingus )))