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- Xref: sparky comp.unix.large:363 mi.misc:726
- Newsgroups: comp.unix.large,mi.misc
- Path: sparky!uunet!hela.iti.org!hela.iti.org!scs
- From: scs@iti.org (Steve Simmons)
- Subject: Re: LISA VI paper availible via anon ftp
- Message-ID: <scs.721401144@hela.iti.org>
- Sender: usenet@iti.org (Hela USENET News System)
- Nntp-Posting-Host: hela.iti.org
- Organization: Industrial Technology Institute
- References: <1dmrsdINNcs4@nigel.msen.com>
- Date: Tue, 10 Nov 1992 13:12:24 GMT
- Lines: 75
-
- [ I've taken the liberty of re-crossposting this to comp.unix.large,
- where Peter hangs out. Peter, feel free to correct me or add
- your own comments. mi.misc is the Michigan general discussion
- group. Neither Ed nor Peter says this explicitly -- the mainframe
- they dropped was running MTS in a usage model very much like the
- University of Michigan. --scs ]
-
- emv@msen.com (Edward Vielmetti) writes:
-
- >The folks at Simon Fraser University have managed to
- >get themselves out of using MTS and onto other computing
- >systems (Unix and VMS) without an undue amount of grief.
- >I know that there's a lot of angst building up at the
- >U of Michigan about the same sort of transition, and in
- >the absence of strong central planning here's at least some
- >hint of what some other organization facing the same
- >move has gone through.
-
- >[ Article crossposted from comp.unix.large,comp.org.usenix ]
- >[ Author was vanepp@fraser.sfu.ca ]
- >[ Peter Van Epp / Operations and Technical Support ]
- >[ Posted on Mon, 9 Nov 1992 20:36:30 GMT ]
-
- >I have just made a copy of our LISA VI paper "Dropping The Mainframe
- >Without Crushing The Users: Mainframe to Distributed UNIX in Nine Months"
- >availible for anon ftp from ftpserver.sfu.ca in directory
- >/pub/ucspapers/LISA-VI.paper.ps.Z
- >(which as the file name implies is in PostScript).
-
- Peter's paper and talk were quite interesting. He did stress a few
- points in the talk that are worth repeating.
-
- There was not an overall reduction in cost when you count many of the
- conversion costs. It was not clear to me how much was conversion (new
- network stuff, etc) and how much was CPU and disk. IMHO, the cost
- benefit will probably improve over time as distributed UNIX boxes
- continue to decline in cost. For a site like University of Michigan,
- much of that conversion wouldn't be needed -- they already have the
- network, AFS, etc.
-
- There was *very* strong central control. Last year at LISA he
- mentioned the project had just been started, and they had some doubts
- about their ability to execute. Fortunately for him, he was wrong.
- The central control got behind the project and pushed with resources
- and political support to get it done.
-
- Many MTS utilities were not ported to the UNIX environment. I asked
- specificly about MICRO and we talked briefly about a few others. They
- seem to have adopted a policy that if there was already a UNIX
- equivelent, conversion would have to be done.
-
- Some users just couldn't get it. They had people claiming not to know
- the change was coming even after the mainframe was turned off.
-
- Tapes were a big issue. They found the unix tape facilities woefully
- underpowered. Lack of ability to read IBM formatted tapes was a big
- lose (they've got years and years of backup and archives), and tape
- thruput speed left a lot to be desired.
-
- Mainframe I/O speed was a big issue. They had a small number of people
- who put huge (by mainframe standards!) datasets onto 250
- inch-per-second tape drives and did data processing. There is no UNIX
- box on their site which can do this; such processing is now farmed
- out.
-
- One thing that came out stronger in his talk was "the mainframe
- attitude". I don't know how to put it any better than that, and it's
- meant as a compliment. They did serious work evaluating, benchmarking,
- and testing performance of the various pieces they installed, much more
- thorough than I see at most installations. Then they tested afterwards
- to see what they'd actually done. Very refreshing, almost inspiring.
- --
- scs: Currently tied for 2536th on the Zwicky list with `zwicky'. The
- list was compiled by Elizabeth Zwicky (not Fritz, not Arnold),
- zwicky@erg.sri.com.
-