How many computers do you have at
Gisborne Intermediate?
We now have approximately
200 PCs in the school. Twenty are in the infotech room and 16 are in a
second ICT suite. All classrooms have at least three PCs; some have four
or five. All PCs are networked on our thin client system except various
stand-alone multimedia machines. Cabling is Cat 5 with a gigabyte fibre
optic backbone. All computers have 100Mb network cards
How many are Pentiums?
All of our computers are now
Pentium class. They range from P75s with 16Mb RAM, to PII-233s with 64Mb
RAM.
How many did you obtain as recycled machines?
All except the multimedia
PCs, which we built from parts to reduce cost.
What applications software are you using?
Mainly Microsoft Office XP
with the addition of Microsoft Publisher and Paint Shop Pro 7.
What activities and curriculum areas are you delivering with these machines?
All curriculum areas are
addressed as appropriate. With our current applications, CD-ROM
reference material and high speed internet connection, we are in a good
position to develop ideas, present, publish and research a wide range of
topics designed to allow students to challenge themselves and broaden
their ICT horizons.
What is the basis of your thin client networking are you using Citrix
Metaframe?
We use Microsoft Windows
2000 — it's considerably cheaper than Citrix Metaframe and less
complex to set up. Citrix would let us stream multimedia across the
network, but we feel that a multimedia network is in the category of
what we would 'like' rather than 'need'.
Our
student network is now powered by three application servers:
- Dual
PIII 600 CPUs with 1Gb RAM
- Dual
PIII 800 CPUs with 1.5Gb RAM
- Dual
AMD 2000MP CPUs with 3Gb RAM
The domain
controller which doubles as a file server, is a PIII 600 with 512Mb Ram.
We have moved to this configuration gradually, as both the number of
computers in the school has increased, and the demands on them have
grown
What made you go to thin client?
Affordability, scalability, not having to upgrade workstations, ease of administration.
What's the minimum number of terminals you'd put on a thin client network?
The break-even point between
having standalones and a thin client network, in terms of the time and
hassle in maintaining a school system, is probably about 6-7 user
computers. We'd had six Acorns in a network, and it drove everyone
crazy. We had only three Windows machines in the school before we
started the thin client network — that was an advantage for us.
How easy was thin client to set up, and how easy is it to maintain? Should other
schools be scared of it?
It's not scary at all. Just
different. Running 200 standalone computers efficiently in a school
would be impossible without multiple technical support staff.
We've
had no major problems — just the odd bit of teething trouble. We do
get minor day-to-day occurrences that are usually ironed out within five
or ten minutes. The number of outages is vastly smaller than would be
generated by the same number of stand-alone computers. This is the
benefit of Windows 2000's centralised administration and security.
Security is the really big advantage of the thin client approach. It's
easier to prevent students messing things up. 680 of our students cause
no trouble, but the mission in life for the last ten of them is to bring
the system down!
As we
now use a constantly available ADSL internet connection, we are more
vulnerable to hackers and the like, so we have invested in Zone Alarm
Pro firewall software.
We use
F-Prot antivirus software as it seems at least as good as the better
known brands, and costs only US$2 per school computer.
We
still use the freeware program Analog X as a proxy server.
We have
several CD writers for backup purposes.
Our own computer technician (Mike) maintains the network on a full-time,
35 hours a week basis.
How reliable has the system been?
The network runs 24 hours a
day, seven days a week, and it's been very reliable. Perhaps once a
month a glitch might take the whole network down. Currently our network
allows about 180 simultaneous connections, and we have yet to reach that
figure.
In the past year we've replaced all of our 486 based computers. Our 'new'
computers came from various suppliers including The Ark and
PC-Recycling.
What about the cost of technical support should that be a worry for
schools thinking of going down the thin client path?
We talk to schools that are
terrified of the cost of hiring a qualified technician. But the good
news is that you don't always need a qualified technician. Every
school has a pool of unemployed parents available to them, and several
would jump at the chance of learning these skills, possibly with wage
support from the Employment Service. All you need is an unemployed
person, probably with a home computer, and a desire to upskill his or
herself. The skills required to run a school network can be gained on
the job.
Mike: My own story is an example of this. My son came home from
school one day and mentioned that the computer teacher didn't have time
to sort out computer problems, and that there were all sorts of
difficulties because of this. I was on the dole with nothing to do, so I
offered to help on the basis that, while I knew very little about it, I
was willing to do what I could and learn as I went. I got an extra $5 a
day from Income Support on top of the dole for the first six months,
then a 50 per cent wage subsidy for the next six months. During this
time the thin client system was installed.
It
was a steep learning curve, but with goodwill from our local computer
supplier, lots of reading at home, and patience from the students and
staff, we managed. Three years later, I still sometimes have to grapple
with basic concepts, but we are managing. I don't feel I'm anything
particularly special, and if I can do it, anyone can. I was 49 years old
when I started — so you don't have to be a young go-getter either.
What range of client machines do you have in your thin client network, in terms
of processor speed?
All are Pentiums — ranging
from P75s to PII 233s, Ram ranges from 16Mb to 64Mb.They run Windows 98
as their base operating system, on about 1Gb hard drives. They use 100M
network cards and use a video resolution of 800x600 at 256 colours.
We got good use out of the '486 based computers but the deciding factor
in replacing them was the inability to get inexpensive 100Mb network
cards to fit the old ISA slots. Students can now build Powerpoint
presentations over the network and run them at normal speeds. The
overall speed and responsiveness of the network has increased by several
factors of magnitude.
What effective speed are your student terminals running software like MS Office?
On the PII 233 computers MS
Word is ready to use before you finish double clicking on the icon. The
P75 computers take a little longer.
What are Gisborne Intermediate's future plans for improving the value/use of ICT?
- Our
aim is to give students opportunities to investigate and further
develop the skills and abilities they'll require in the 21st
century.
- We'll
continue helping teachers upgrade their ICT skills, and improve
their ability to incorporate a smorgasbord of ICT related activities
within the day-to-day curriculum.
- We
plan to further develop our TV network and digital
video editing suite.
- We're
developing an interactive website that will let students and staff
access appropriate information from home, for homework etc.
Something
of a change from past equipment at Gisborne Intermediate!
Mike: I went to Gisborne Intermediate when I was a kid, and it
certainly isn't the school I used to know! Our principal, Bruce Topham,
(btopham@gisint.co.nz),
is right behind ICT and without his support, foresight and drive, we
couldn't have achieved anything. Our ICT teacher, Tamati Elers (telers@gisint.co.nz),
has really grown into the job. Among us we have administrative,
educative and technical viewpoints working together towards the same
end, and this is probably the most important part of our recipe. The
team works well.
Do you have any tips that would help other schools set up and use a thin client
network?
- Start
small (in the ICT room perhaps) and work out how to use and maintain
it before spreading through the school. The start-up system could
have, say, six client machines and a single CPU server with perhaps
1GB Ram.
- Don't
try to fit a thin client system around existing PCs. Fit existing
PCs into a properly planned thin client system.
- Audit
what resources you already have, work out what you need your system
to do, and design a plan to get from where you are to where you want
to be, probably in several stages. But don't be bullied into setting
a five year plan in concrete — in the computer world nobody knows
what's going to happen in six months, let alone several years.
- Build
part or full time technical support into your budget.
- Don't
put network connections below desktop level — kids can't resist
kicking them.
- Don't
install computers in back rooms out of the way. Put them in full
view.
- Allow
plenty of server capacity — students adapt to multi-tasking
amazingly quickly and modern programs are increasingly resource
hungry. If you haven't planned for it, your network will slow to a
crawl, or crash. Five years ago, a single processor server with
256Mb RAM would run 30 workstations. After the students discovered
multi-tasking, a single processor server with 256Mb of RAM handled
approximately 20 workstations. As of September 2003, 3 dual
processor servers with a total of 5.5Gb Ram are happily running
around 200 workstations.
- Use
a file server to reduce the load on the Applications Server(s). If
you are running several Application Servers, use the File Server as
the Domain Controller.
- Get a decent UPS (Uninterruptible Power Supply). Some modern versions can
shut down servers in an orderly fashion after a predetermined 'no
power' period.
Summary of Gisborne Intermediate's network
and ICT resources
- 3
domains: 1 for students, 1 for the library, 1 for administration.
- 3
terminal servers in the students domain:
1.
Dual PIII 600 CPUs with 1Gb RAM
2.
Dual PIII 800 CPUs with 1.5Gb RAM
3.
Dual AMD 2000MP CPUs with 3Gb RAM
The domain controller, which doubles as a file server, is a PIII
600 with 512Mb RAM.
- 1
Liebert UPS station GXT.
- 1
CDROM tower — 7 SCSI CDs — Encarta, TVNZ Encyclopaedia,
Dangerous Creatures etc. hosted on file server and accessible from
all workstations.
- Around
200 workstations: All Pentiums
- ADSL
Jetstream Internet connection – shared through Analog X proxy
server.
- 8
digital cameras (6 Sony Mavicas, 1 Kodak DC280 and 1 Nikon 5700)
- 1
HP 4100 laser printer: all classrooms print here.
- 1
HP6P laser printer: infotech room printer.
- 1
HP 690 inkjet printer in the infotech room — restricted use.
- 1
Minolta Magicolor II desklaser: used on cost recovery basis from the
infotech room. (For instance students pay to get have personal
digital camera photos printed.)
- 4
standalone computers ranging from Celeron 600 to Duron 1300 with A4
scanner in the infotech room.
- Standalone
Celeron 600 in the art room with A3 scanner and touchpad.
- Standalone
Celeron 600 in the music room running Sibelius notation software.
- Three
standalone video editing computers (AMD 1600 and similar)
- Multimedia
projector used for tuition in the infotech room, PowerPoint
presentations in classrooms and the school hall, and projecting videos onto
a 2.4 metre screen in the hall. (Linked to PA system.)
- 29
inch computer monitor in the infotech room for tuition.
Contact Mike Bugden at mike@gisint.co.nz