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1994-04-11
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From: mac18@cus.cam.ac.uk (Sparky)
Date: Sat, 9 Apr 1994 19:03:37 -0500
To: Multiple recipients of list <nexus-gaia@indial1.io.com>
Subject: Re: Equipment
Your wish is my command. Here are the two most informative posts
that I sent to Dwayne. To put them in context, I was thinking of getting
a SUN and asked what kind of setup I would need specifying exactly what I
think I'm going to be doing in the Ecafe - your needs may be slightly
different. I also got several posts of the 'you should consider a PC' and
'wait for a power PC' kind but without any information value. And one other
guy who offered to sell me a SUN and pay for shipping :)
Ill also post another message after this from someone who thinks
SUNs are good, not in reply to my question but on a similar theme.
: I intend to set up the following system...
: A main UNIX box which handles ~100 accounts (working
: up to that) and essentially a unrestricted connection to the net, ie
: mail,telnet,ftp,gopher,www etc...
: 16 terminals connected to this to access the accounts,
: no graphics, just text, most likley vt320's.
:
: Questions:
: - Will a 64k line be enough for the inet connection to the
: UNIX box.
I'm not sure about this one.
: - Is an ethernet needed or could the terminals be connected
: serial.
It would depend on the serial interface. If its intelligent, buffered and
has its own processor then it should be ok with serial.
: - What UNIX box would you recommend? I guess some type
: of SUN, but I have no experience in this area so what do I need? Considerations
: ... speed, disk space etc. Also what other stuff do I need (router etc)?
I would suggest a 486DX/50 EISA system running Linux. The only limitation is
that it does not support any intelligent serial systems. If you think a PC
doesn't have the power to do this job, the Cleveland Freenet uses several
486DX/50's to run its Freenet. If you don't know, Cleveland Freenet is the
largest Freenet system and has hundreds of users at all times. Each PC
runs BSD and has something like 32 megs of ram and can comfortably handle
~70 users logged in from a terminal-server even with heavy NFS traffic.
: - What would I expect to pay for all the above?
Router: ??????
Terminal server ??????
486DX/50 EISA w/
32 megs ram,
1 gig disk $5,000 (this is a high quote since worst case is often
best)
Linux Operating
System (UNIX) $FREE! Can't beat that.
: - Is it possible to buy this kind of equipment from America
: and ship it over, or is this impossible?
It would be possible, but expensive. I'm sure UK has its own distributors.
-Kevin
Second Reply...
> I intend to set up the following system...
> A main UNIX box which handles ~100 accounts (working
>up to that) and essentially a unrestricted connection to the net, ie
>mail,telnet,ftp,gopher,www etc...
> 16 terminals connected to this to access the accounts,
>no graphics, just text, most likley vt320's.
>
>Questions:
> -Will a 64k line be enough for the inet connection to the UNIX box.
64k should be just fine for 16 terminals.
> -Is an ethernet needed or could the terminals be connected serial?
Depends on your physical setup, but there's no reason other than where you
put the terminals that serial wouldn't do.
> -What UNIX box would you recommend? I guess some type
>of SUN, but I have no experience in this area so what do I need?
> Considerations
>... speed, disk space etc. Also what other stuff do I need (router etc)?
There are many many unix boxes. With a Sun you will pay a fair bit just for
the nameplate. A fast intel box running BSDI's unix with digiboard
or Able technology serial ports will outrun many of the older suns.
If your unix box doesn't have the number of serial ports that you require,
you'll need a terminal server. Depending on who you get your connectivity from
and what the physical nature of that connection is, you may need one or more
of the following: a router, a modem, a csu/dsu, SLIP software.
For a 64k line, you can quite possibly just run SLIP to your feed site out of
a fast serial port on your host machine, no muss no fuss.
> - What would I expect to pay for all the above?
Depends on how much capacity you want; how much disk space, how many computrons
per user, etc. A PCI bus 586 machine runs about $3500 right now, serial
port extensions or used terminal servers cost about $400-$1200, vt320's used
can be had for perhaps $150 each, less if you shop carefully. Disk space
in quantity should cost no more than $1/megabyte, PC Unix OS' cost between free
and $2500 and consume between 40MB and 350MB.
> - Is it possible to buy this kind of equipment from America
>and ship it over, or is this impossible?
You'll have to worry about power supplies so that the US equipment gets
120v at 60Hz. Also, your hookup to your network provider will likely be
over phone lines, and US-spec telecom equipment may not work or be
legal to use in the UK.
--
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