ken@dali.cc.gatech.edu (Ken Seefried iii) (04/10/91)
----- The Wren IV is one of the better drives I've had experience with. There is one thing that a lot of people don't seem to know that can make using the drive a lot faster. The Wren IV has a 32K cache on the controller. The default, it seems, is for this cache to be off (silly considering it's transparent and drasticly improves performance). First thing that I do when I get one in is to hook it up to a PC with an Adaptec SCSI controller and run Roy Neese's SCSICNTL.EXE to turn the cache on. I don't know of any other way to do this... The performance increase is very noticable. -- ken seefried iii ken@dali.cc.gatech.edu "If 'ya can't be with the one you love, honey, love the one you're with..."
mra@searchtech.com (Michael Almond) (04/11/91)
In article <25883@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: >The Wren IV has a 32K cache on the controller. The default is for this >cache to be off. ... run Roy Neese's SCSICNTL.EXE to turn >the cache on. I don't know of any other way to do this... Does anyone know the default for the WREN 6. We have ours connected to a DECsystem 3100 running Ultrix 4.1. The Installation Manual doesn't mention any jumpers to set. -- Michael R. Almond (Georgia Tech Alumnus) mra@srchtec.uucp (registered) search technology, inc. mra@searchtech.com 4725 peachtree corners cir., suite 200 uupsi!srchtec!mra norcross, georgia 30092 (404) 441-1457 (office)
acarlson@laurel.math.umass.edu (Adam Carlson) (04/14/91)
In article <25883@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: >The Wren IV has a 32K cache on the controller. The default is for this >cache to be off. ... run Roy Neese's SCSICNTL.EXE to turn >the cache on. I don't know of any other way to do this... Does anyone know how else this can be done, I am running SunOS 4.1 on a Sun 3/80 and can't run a .exe file (which I assume is a MS-DOS program) Thanks -- Adam Carlson | It's good to know that if I behave acarlson@math.umass.edu | strangely enough, society will take Statistical Consulting Center | full responsibility for me. UMass @ Amherst | - Ashleigh Brilliant
olson@anchor.esd.sgi.com (Dave Olson) (04/15/91)
In <1991Apr11.164521.18541@searchtech.com> mra@searchtech.com (Michael Almond) writes: | In article <25883@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: | >The Wren IV has a 32K cache on the controller. The default is for this | >cache to be off. ... run Roy Neese's SCSICNTL.EXE to turn | >the cache on. I don't know of any other way to do this... | | Does anyone know the default for the WREN 6. We have ours connected to a | DECsystem 3100 running Ultrix 4.1. The Installation Manual doesn't mention | any jumpers to set. There is no jumper. It is a bit in mode select page 0x38 (vendor specific) or page 8 (scsi 2 cache page) depending on which wren VI drive you have, and/or whether the firmware is a recent revision. The wren IV is definitely in page 0x38. -- Dave Olson Life would be so much easier if we could just look at the source code.
kls30@duts.ccc.amdahl.com (Kent L Shephard) (04/24/91)
In article <1963@umvlsi.ecs.umass.edu> acarlson@laurel.math.umass.edu (Adam Carlson) writes: > >In article <25883@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: >>The Wren IV has a 32K cache on the controller. The default is for this >>cache to be off. ... run Roy Neese's SCSICNTL.EXE to turn >>the cache on. I don't know of any other way to do this... > >Does anyone know how else this can be done, I am running SunOS 4.1 on >a Sun 3/80 and can't run a .exe file (which I assume is a MS-DOS program) I would like to know also. I have a WREN IV on a NeXT and would like to turn the cache in my HD on. > >Thanks >-- >Adam Carlson | It's good to know that if I behave >acarlson@math.umass.edu | strangely enough, society will take >Statistical Consulting Center | full responsibility for me. >UMass @ Amherst | - Ashleigh Brilliant -- /* -The opinions expressed are my own, not my employers. */ /* For I can only express my own opinions. */ /* */ /* Kent L. Shephard : email - kls30@DUTS.ccc.amdahl.com */
dwboyce@acsu.buffalo.edu (Doug Boyce) (04/27/91)
In article <0c6k02Mm07.E01@JUTS.ccc.amdahl.com> kls30@DUTS.ccc.amdahl.com (Kent L. Shephard) writes: :In article <1963@umvlsi.ecs.umass.edu> acarlson@laurel.math.umass.edu (Adam Carlson) writes: ::In article <25883@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: :::The Wren IV has a 32K cache on the controller. The default is for this :::cache to be off. ... run Roy Neese's SCSICNTL.EXE to turn :::the cache on. I don't know of any other way to do this... ::Does anyone know how else this can be done, I am running SunOS 4.1 on ::a Sun 3/80 and can't run a .exe file (which I assume is a MS-DOS program) :I would like to know also. I have a WREN IV on a NeXT and would like to :turn the cache in my HD on. There was NeXT specific source code posted a while back. Anybody remember off the top of their head. -- Doug Boyce dwboyce@acsu.buffalo.edu "Speedballs are interesting if you aren't the cannoneer doing the running." "Where's that Lotto ticket, I want a NeXT NoW!"