teoh@uicbert.eecs.uic.edu (08/20/90)
I have a seagate 80MB w/ MFM interface running at 28ms hardrive. But many people have pointed out that there's hardly any room for a complete SVR4 package. So, I decided to add another faster drive (~15ms) but of different interface type. Is it possible to allow 2 different types of hard disks in a pc UNIX environment (using 2 different controllers)? If so, what are comments on AT IDE vs ESDI drives? Is it true to say that the AT IDE drive is dependent on AT architecture machine? How machine independent is the ESDI drive outside the AT arena? I was planning to use the slower 80MB as secondary drive for back up purposes or storing files of lower priority, and leaving all the executables in the faster drive. Will there be any substantial loss of performance w/ this configuration? Or, is it better just to have a faster hardrive. All comments are welcome, your help is greatly appreciated. -------------------------------------------------------------------------- Hai-Chuan Teoh * Email: teoh@uicbert.eecs.uic.edu Univ of Illinois * Tel: (312) 930-1942 Electrical Engr & Computer Sci * --------------------------------------------------------------------------
teoh@uicbert.eecs.uic.edu (08/20/90)
Message-ID: <1990Aug19.183543.8341@uicbert.eecs.uic.edu> Organization: University of Illinois at Chicago Distribution: comp Date: Sun, 19 Aug 90 18:35:43 GMT Lines: 25 I have a seagate 80MB w/ MFM interface running at 28ms hardrive. But many people have pointed out that there's hardly any room for a complete SVR4 package. So, I decided to add another faster drive (~15ms) but of different interface type. Is it possible to allow 2 different types of hard disks in a pc UNIX environment (using 2 different controllers)? If so, what are comments on AT IDE vs ESDI drives? Is it true to say that the AT IDE drive is dependent on AT architecture machine? How machine independent is the ESDI drive outside the AT arena? I was planning to use the slower 80MB as secondary drive for back up purposes or storing files of lower priority, and leaving all the executables in the faster drive. Will there be any substantial loss of performance w/ this configuration? Or, is it better just to have a faster hardrive. All comments are welcome, your help is greatly appreciated. -------------------------------------------------------------------------- Hai-Chuan Teoh * Email: teoh@uicbert.eecs.uic.edu Univ of Illinois * Tel: (312) 930-1942 Electrical Engr & Computer Sci * --------------------------------------------------------------------------
todd@slammer.UUCP (Todd Merriman) (08/22/90)
In article <25313.26ce9f6f@kuhub.cc.ukans.edu> teoh@uicbert.eecs.uic.edu writes: >Is it possible to allow 2 different types of hard disks in a pc UNIX >environment (using 2 different controllers)? When I installed Interactive Unix 2.2 I attempted to use an ST-506 primary controller and an Adaptec 1542B SCSI controller as secondary. After a *day* of re-building kernels and plugging and un-plugging controllers, with nary a kernel that would boot, I gave up. Fortunately, the SCSI controller has floppy ports, so I decided to toss the ST-506, two MFM drives, and use only the SCSI. The Interactive documentation states that two different contollers is definitely allowed, but clearly I didn't have the magic to make it work! Todd Merriman Software Toolz, Inc. 8030 Pooles Mill Dr., Ball Ground, GA 30107-9610 todd@slammer.UUCP, V-mail (800) 869-3878, (404) 889-8264
johnk@opel.COM (John Kennedy) (08/28/90)
In article <637@slammer.UUCP> todd@slammer.UUCP (Todd Merriman) writes: -In article <25313.26ce9f6f@kuhub.cc.ukans.edu> teoh@uicbert.eecs.uic.edu writes: ->Is it possible to allow 2 different types of hard disks in a pc UNIX ->environment (using 2 different controllers)? - -When I installed Interactive Unix 2.2 I attempted to use an ST-506 primary -controller and an Adaptec 1542B SCSI controller as secondary. After -a *day* of re-building kernels and plugging and un-plugging controllers, -with nary a kernel that would boot, I gave up. Fortunately, the SCSI -controller has floppy ports, so I decided to toss the ST-506, two MFM -drives, and use only the SCSI. - -The Interactive documentation states that two different contollers is -definitely allowed, but clearly I didn't have the magic to make it -work! I agree. The documentation and menus indicate you can set up a primary ST-506 and a secondary SCSI, but what I tried was the opposite: having an old ST-506 controller and drive available as secondary. My attempts, too, failed. Anyone had any luck with this? Followups to comp.unix.i386. -- John Kennedy johnk@opel.COM Second Source, Inc. Annapolis, MD