Re: Results of my straw poll.

Bill Gunshannon wrote:
In article <1148487073.250579.291150@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
"Doug Phillips" <dphill46@xxxxxxxxxxxx> writes:
Bill Gunshannon wrote:
In article <L5Sbg.753$oA6.198@trnddc06>,
John Santos <john@xxxxxxx> writes:
Bill Gunshannon wrote:

Plus, remember my saying I was going to put 7 CD drives
on the box? It's not just VMS documentation I need to serve.


Who says you need 7 CD drives for the VMS docs?

I didn't say 7 for VMS. The VMS docs are on two. But I have other
docs to serve as well. And I certainly don't want to have to put up
more than one machine to do the same job.


Have you had good luck with CD sharing? How many people do you expect
will need access to the same CD at the same time? My experience has
been that the number of unhappy system users increases proportionately
with the number of people having to share the same CD.

Doesn't anyone read these threads before posting? I'm not sharing
anything. The docs are, for the most part HTML and will be served
by a webserver. Now, how many people can simultaneously access a
web server? What is the likelihood they will all ask for the same
page at exactly the same time?

As for sharing CD's. I do it for installs in the lab all the time.
I can usually do 6-8 machines at the same time using a shared CD with
satisfactory performance. Once you go beyond that you usually get
hard timeouts before the performance actually drops off. I would never
recommend sharing CD's in a production environment. If you need to share
the data with more than one or two users it is much better to just copy
it to disk and share the disk.


Sorry, I misunderstood. I read you to say that you were putting 7 CD
drives on a PC to provide documents that students would access (in HTML
and other standard document formats) to use for class work. I
speculated that you'd build an HTML menu or such to help them get to
the documents.

I don't know what you mean by the statement >>I'm not sharing
anything.<<

Bandwidth, processor(s), memory and hard-disk would be shared, but that
shouldn't pose a problem. I'd say they'd be sharing access to the CD's,
too, and there could be a problem.

Presumably, your documentation offerings will be of the type to which
individual students and classes don't otherwise have convenient access.
If not, what's the point?

If the students in only one class are using the documents to do their
work, I guessed the likelihood of many of them accessing the same CD
during some period of time would be pretty high.

If they're viewing the same page(s), the contention (for head movement)
will be low.

If different classes are accessing different areas of the documents on
a CD, contention will be high. Frequent timeouts and slow response
times will dissuade them from using the service.

If it were me, I'd load the most requested / most needed documents to a
hard-drive, and use 2 or 3 CD drives for special requests and sample
offerings. I'd use my main web-page (menu) for announcements and give
the students a "feedback" link where they could make requests &
suggestions. I'd also provide links to pertinent Internet resident
documentation (as Kerry Main and others have suggested). Just my $.02,
constructive or not.

.

Relevant Pages

  • Re: Results of my straw poll.
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