[K12OSN] Large scale implementation in the pipe, input needed.

[norbert]

Hi,

OK let me qualify ....... from a costing perspective if you're using 
stock P-4s with 2 GB of memory it will be difficult to run more than 25 
clients. Assuming that a full load of SW is used, i.e. OO, mozilla, 
gimp, blender, gcompris, etc...
However if monies are available for bigger machines with more memory 
then that's another story......

norbert

dhuckaby at paasda.org wrote:

> only 25 clients per server?
> seems a bit on the low side no?
>
> --Huck
>
> norbert wrote:
>
>> Hi Daniel,
>>
>> This is an issue that has come up countless times, school boards try 
>> to centralise the server in the misguided belief that they willl 
>> reduce the amount of maintenance.... (They've been working with M$ 
>> for far too long !!!)
>> X-windows is a very "heavy" protocol, make your life simple install 
>> local servers in each school & run the client from them. I would put 
>> about 25 client per server, have the servers clustered & sit back & 
>> relax.
>>
>> good luck
>>
>> norbert
>>
>> daniel.hedblom at skola.solleftea.se wrote:
>>
>>> Hi!
>>>
>>> At the school district im an admin at there are talks about 
>>> implementing a
>>> large scale k12 LTSP solution. We have been testing succesfully on one
>>> school but only with about 15 clients. The latest bid is to have one 
>>> big
>>> central server. It will be serving a cuple of other schools over 1 gbit
>>> fiber connections. An estimate over the number of clients would be 
>>> about
>>> 50-60 at two schools and maybe 40 additional from other smaller schools
>>> and locations.
>>>
>>> I have been pondering this quite a bit and im a bit concerned about the
>>> cost of the server and backbones etc. Since other traffic flows in the
>>> same fibers there will have to be some kind of vlan separating the 
>>> traffic
>>> since passwords etc flows unencrypted between client/server. I really
>>> would appriciate input on this since i have a thing for linux and 
>>> wouldnt
>>> want an implementation to go wrong at my own turf. Is a central 
>>> server a
>>> good solution or is the benefit smaller than percieved? Have anyone 
>>> done
>>> this in a grand scale and what was the pitfalls in those cases?
>>>
>>> Im perticulary interested in how scaling have been solved on big sites.
>>> Have tried an openmosix cluster but the benefit was small since we dont
>>> run any cpu intensive applications.
>>>
>>> In short, is it a good solution to get a big iron hosting everything
>>> instead of spreading several smaller Terminal Servers onsite and just
>>> centralize /home and logins?
>>>
>>> All inputs are appriciated.
>>>
>>> Cheers!
>>>
>>> /daniel
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
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>
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