4075_226@uwovax.uwo.ca (01/22/91)
We have a 4D/220 with an internal SCSI disk. We have ordered an external SCSI connector and wish to install a large (third-party) SCSI drive. The drive we favour is the Fujitsu M2266 (1.2 GB capacity). Can anyone offer any experience with this drive, or any other drive not "built-into" the fx formatting utility? Does fx allow manual entry of drive geometry parameters for drives it doesn't know about? Thanks for your input. Dave Martin (dave@csd.uwo.ca) Computer Science Department University of Western Ontario London Ontario Canada
merritt@iris613.gsfc.nasa.gov (John H Merritt) (01/22/91)
In article <1991Jan21.125431.8346@uwovax.uwo.ca> 4075_226@uwovax.uwo.ca writes: >We have a 4D/220 with an internal SCSI disk. We have ordered an external >SCSI connector and wish to install a large (third-party) SCSI drive. The >drive we favour is the Fujitsu M2266 (1.2 GB capacity). Can anyone offer >any experience with this drive. I have installed the M2266S/H (this may well be the specific model that you will get) on our 4D70. This is a 1.2Gbyte disk. I have had no problems with it, once it was properly installed. It took a bit of telecomming to get all the jumpers on the disk properly set up for the SGI machine. I really never received the installation instructions from the 3-rd party vendor; they kept sending me the "SCSI Physical Specification" which didn't help with the physical layout and jumper settings for the specific hardware I received. So, to save you that possible aggrivation, here are my notes on how to physically install this particular disk. You will need to check 3 things: 1. The SCSI terminating resistor is attached or removed. Remove it if the disk will not be the last device in the SCSI chain. 2. The SCSI id is properly set. 3. CNH2 jumpers have pins 1,2 and 15,16 open. This is important if the disk is to communicate properly with the SCSI controller. The HOW to: 1. Remove the disk unit from the power supply casing. 2. Identify CN9, CN3, CNH3, CNH4, CNH1 and CNH2; we will only concern ourselves with CN9 and CNH2, but knowing where the others are helps. 3. Find the SCSI terminating resistor. It is a DIP style chip located above CNH4 and to the right of the SCSI connnector (CN1). To find the resistor; orient the disk so that the Power connector is at the upper left and CN9 is at the lower left; this will place CNH2 at the lower center of the picture and CN7 all the way to the lower right. 4. Remove the terminating resistor if desired. Otherwise leave it. 5. Remove the jumpers for pins 1,2 and 15,16 on CNH2; these are the two end jumpers. This was the clincher for getting the disk operational. Prior to their removal the following errors were recorded: SC0:Unexpected info phase, state 4F phase 20 SC0,6:Resetting SCSI bus: stray interrupt error, phase 0x20, state 0x4F 6. Set the SCSI id on CN9. Jumper on pins 9,10 = 4 pins 11,12 = 2 pins 13,14 = 1 Use any combination of jumpers to get id's 0 through 7. 0 is no jumpers and 7 is all 3 jumpers. An id of 3 is 9,10 open; 11,12 and 13,14 closed. Note: pins 13 and 14, on CN9, are located closest to CNH4. That is, they are located on the side closest to the SCSI cable. 7. Put everything back together and fire it up. You can 'fx -x' right away to begin formatting the disk. Use the 'auto' option. I don't know how long it takes, because I left and came back in the next day to a completely formatted disk. Then you can make file systems all you want. I have good notes on making filesystems. You can reboot if you like. I only rebooted when it was necessary; I think it is only usefull if you want 'hinv' to reflect the actual hardware on the system. John H. Merritt --> merritt@iris613.gsfc.nasa.gov Applied Research Corporation at NASA/GSFC "Yesterday I knew nothing, today I know that."