Indigo/SGI drives

On all of my replaced SCSI drives, I use SCA adaptors and SCA drives- much easier to get nowadays than 50 pin models, and also newer. Any drive will work-they do not need special firmware The deal for SGI sleds is as follows- The 50 pin cable goes into the 50 pin narrow SCSI socket on the adaptor- self explanitory The power cable will often need to be teased out a little longer (at least on Indigo2, I don't have my Indigo sled at hand) For the SCSI ID cable (the 6-pin bit) you will need a VOM/DMM. One side will have a bank of 3 wires, the other will have 1 wire. On the adaptor, there will be 3 pins wired together -> these are ground, connect to the single pin side. The other wires set the SCSI ID based on which slot in the Indigo the drive is installed If you choose to hardwire the drive (not as neat, but a definite possibility), remember that on IRISes the host adapter is ID 0, so the first (system) disk is ID 1- and so on. Most computers have the host adapter as ID #7, but not Siggys. Best of luck to you, they are very neat machines, with a slick UI (Indigo Magic)- For IRIX 5.3 be sure to get the free IDO (Development Option-compilers and headers, available from www.sgi.com) Scott Quinn