Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!bbn!ulowell!ross@sword.ulowell.edu
From: ross@sword.ulowell.edu (Ross Miller)
Newsgroups: comp.sys.apollo
Subject: Re: more SR10 questions
Message-ID: <10735@swan.ulowell.edu>
Date: 15 Dec 88 18:14:04 GMT
References: <15567@iuvax.cs.indiana.edu>
Sender: news@swan.ulowell.edu
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> will probably solve most of my objections about speed of backups (since doing
> a distributed search will undoubtably speed things up), but there is still
> the problem that wbak writes slowly to the tape.  I believe 4.3 dump speed
> should be achievable for a single file as far as keeping a streaming tape
> drive busy to at least occassionally stream.
> 
> 	I guess with a fast network you could always just rcp these files to
> some machine with a faster tape system.


What I find will work is that if one runs wbak on a machine that is very
lightly loaded and the right configuration.  I can occasionally stream
a cypher 6250 9track off of a dsp80 if I run from the single user shell.
The tape will not stop moving otherwise, but if I attempt to run that
node with spm, ethernet, llbd, and other stuff, then the 3.0 Mb system
just won't keep up and the drive stops moving.

						Ross