sam@ccvs3.uucp (Sam Moore) (06/01/89)
Has anyone experience with adding a SCSI drive to an RT? I have a 6151 with the 70 meg. ESDI disk now. I want to add a SCSI drive to the thing. I am currently running AIX 2.2.1, but I am thinking of running AOS 4.3. Any comments on AOS and/or SCSI drives on the RT? Sam
dyer@spdcc.COM (Steve Dyer) (06/01/89)
In article <3091@ncsuvx.ncsu.edu> sam@cave.ncsu.edu (Sam Moore) writes: >Any comments on AOS and/or SCSI drives on the RT? IBM's SCSI host interface works "out of the box" with their 678 "Athens" 200mb and 400mb humongous 14" drives. This may be out of your league -- size, price and power-wise. I suspect that it will work with other SCSI disks, but it would probably require some amount of driver hacking. I can't comment on AIX, but if you're running AOS 4.3, I highly, highly, highly recommend avoiding the IBM SCSI interface and getting Christer Bernerus' driver for the Adaptec AHA-1450A SCSI interface, a PC/AT board which is very inexpensive: < $300. His 4.3 device driver is written the RIGHT way, so that device drivers of all types can be slipped beneath the generic controller code. He provides a Maxtor 4380S hard disk driver and a SCSI streaming tape driver, both of which give you adequate boilerplate to write a driver for any kind of SCSI device you want--I'm working on a CD-ROM driver right now based on his hard disk driver. I got the disk driver working with a Newbury Data 4380S unit with a minimum of tweaking (mainly in defining the templates for the MODE SENSE command, since different drives return different pages.) A Maxtor 4380S should work out of the box. His code comes with a standard university-style disclaimer/copyright. I don't know what his opinion is regarding this publicity, but I am one very pleased individual. His address in Sweden is bernerus@utc.chalmers.se. -- Steve Dyer dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer dyer@arktouros.mit.edu