Error during command authentication.
Error - unable to initiate communication with LISTSERV (errno=10061, phase=CONNECT, target=127.0.0.1:2306). The server is probably not started.
Received: from fog.ccsf.cc.ca.us
by bat-gwmta.ccsf.edu; Wed, 09 Jul 2003 08:03:39 -0700
Received: from ns7.ccsf.cc.ca.us (ns7.ccsf.cc.ca.us [147.144.1.250])
by fog.ccsf.cc.ca.us (8.11.3/8.11.3) with ESMTP id h69F3c226888;
Wed, 9 Jul 2003 08:03:38 -0700 (PDT)
Received: from listserv.dartmouth.edu (listserv.dartmouth.edu [129.170.17.24])
by ns7.ccsf.cc.ca.us (8.11.6/8.11.6) with ESMTP id h69F3cx23473;
Wed, 9 Jul 2003 08:03:38 -0700 (PDT)
Received: from Madrid (listserv.dartmouth.edu) by listserv.dartmouth.edu (LSMTP for Windows NT v1.1b) with SMTP id <0.0062E40A@listserv.dartmouth.edu>; Wed, 9 Jul 2003 11:03:27 -0400
Received: from LISTSERV.DARTMOUTH.EDU by LISTSERV.DARTMOUTH.EDU
(LISTSERV-TCP/IP release 1.8e) with spool id 1076391 for
LLTI@LISTSERV.DARTMOUTH.EDU; Wed, 9 Jul 2003 11:03:27 -0400
Received: from mailhub2.dartmouth.edu by listserv.dartmouth.edu (LSMTP for
Windows NT v1.1b) with SMTP id <0.0062E400@listserv.dartmouth.edu>;
Wed, 9 Jul 2003 11:03:26 -0400
Received: from newdancer.Dartmouth.EDU (newdancer [129.170.208.31]) by
mailhub2.dartmouth.edu (8.12.8+DND/8.12.8) with ESMTP id
h69EHRPu259152 for ; Wed, 9 Jul 2003 11:02:59 -0400
(EDT)
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline
X-MailScanner: No virus detected by mailhub2.Dartmouth.EDU
Approved-By: LLTI-Editor
Message-ID: <14219967@newdancer.Dartmouth.EDU>
Date: Wed, 9 Jul 2003 11:02:57 EDT
Reply-To: Language Learning and Technology International Information Forum
Sender: Language Learning and Technology International Information Forum
From: LLTI-Editor
Subject: Re: #7188.1 Using Disk Images of Language CD ROMS in Lab (!)
To: LLTI@LISTSERV.DARTMOUTH.EDU
Precedence: list
--- Forwarded Message from Jack Burston =
---
>Date: Mon, 07 Jul 2003 11:04:31 -0400
>From: Jack Burston
>Subject: Re: #7188 Using Disk Images of Language CD ROMS in Lab
>In-reply-to: <14120493@newdancer.Dartmouth.EDU>
>To: Language Learning and Technology International Information =
Forum
>User-Agent: Microsoft-Entourage/10.1.0.2006
------------------
Dear Joseph,
Centralizing you CD resources to a server is a great way to avoid =
the
hassles of keeping CDs in local drives (and distributing them to =
students
for this purpose). I looked into this rather extensively last year =
and can
report that, while it can be done, it requires considerably more =
than
redirecting the path to your CDs. Dumping the CD to a hard disk is =
easy
enough, but programs that require the CD to remain in the drive =
typically
make internal calls to resources which are located in fixed =
locations on the
CD and these can't simply be rerouted through the OS.
There are basically three solutions to the problem:
1) CD/DVD Disk changer
2) CD/DVD Disk jukebox
3) Virtual CD/DVD jukebox
The following URL gives a good description of these options:
http://www.kintronics.com/jukebox.html
Basically, a disk changer contains a single CD/DVD reader plus a =
carrousel
mechanism that rotates disks (usually no more than 5) into place. =
This is
the cheapest solution, but also the slowest and restricted to a =
single user
at a time. =20
A disk jukebox contains multiple CD/DVD readers and can serve as =
many
simultaneous users as there are disk drives. It is also possible =
to use
disk changers in a jukebox, for example storing 35 disks in 7 =
changers.
While a jukebox can serve multiple simultaneous users, no user can =
access
the same CD at the same time unless multiple copies are stored.
The most versatile solution to CD/DVD storage and distribution is =
the
virtual jukebox. In essence, this is a dedicated multimedia server =
upon
which CD/DVD content is stored in large, fast hard disks. The trick =
here is
special software that in effect tricks the computer into thinking =
that a
hard disk folder containing the CD/DVD contents is actually a CD =
drive.
Because they are hard disk based, virtual jukeboxes can serve any
combination of the same or different CD/DVD disks to as many users =
as
network bandwidth will allow. The amount of bandwidth needed will, =
above
all, depend on the quantity and quality of video resources needing =
to be
distributed. In my trials last year with a top end PrimeArray =
server (see
URL below), I was able to successfully serve up full-screen MPEG =
video to 32
computers over a IGB backbone with a switched 100 BaseT connection =
to each
station. Incidentally, with regard to DVDs, it has to be kept in =
mind that
(aside from copyright restrictions) commercial DVDs will normally =
scramble
any attempt to copy them to a hard disk. Lastly, as might be =
expected, the
versatility of a virtual jukebox come at a price: $5000-$10,000 =
depending on
CPU and the size and speed of hard disks.
Aside from Kintronics (indicated above), there are two other =
producers of
virtual jukeboxes of which I am aware:
PrimeArray http://www.primearray.com/). Be advised though that a =
Virtual
Jukebox http://www.cdcomputer.com/Virtual%20Jukebox.htm
I trust you find the above of some use. Jack
--=20
Jack Burston, Ph.D.
Director=20
Foreign Language Technology Center
College of Liberal Arts
Rochester Institute of Technology
92 Lomb Memorial Drive
Rochester, NY 14623-5604
Phone: (585) 475-3156
Fax: (585) 475-7120