[K12OSN] Networking a new school for K12LTSP?

Burke Almquist balmquist at mindfirestudios.com
Fri Jan 26 18:55:59 UTC 2007


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For installations that need 3 or more servers, I'd have one server  
with SCSI drives that has /home exported over NFS and centralized  
login and a different LTSP servers for each area. This makes backup  
easier (all the important data is on the one server) and it also  
allows you to put cheep disks on your LTSP servers. Put the expensive  
SCSI RAID all on the one server that does NFS and login(with  
redundant power supplies, UPS, etc). This lets you build relatively  
cheep LTSP servers using dual core CPUS with lots of RAM and cheep  
low capacity IDE drives. All the servers should use gigabit ethernet  
though. Two servers seems to be a bad number. I'd either try to keep  
it all on one server, or divorce your /home and LDAP server from your  
LTSP servers.

On Jan 26, 2007, at 10:54 AM, Joseph Bishay wrote:

> Hello,
>
> Thanks once again for all the insight! I'm going to be going back to
> the building committee with much of this in mind.
>
> I'm hoping this isn't a very silly question, but I am a bit confused.
>
> I have a question about the MDF and the IDFs -- where all the network
> cabling will be running back to.  Now I know from various setups I've
> seen that often where all these cables terminate there is a rack with
> the hardware that connects to the switches and the patch panel.  In
> our case while we will have a patch panel where the various Cat6
> cables will come in and terminate.  Assuming 4+ drops / room, we'll
> have many, many terminations.  Now, due to the cost of rack-mounted
> equipment, and what we can afford/is donated to us, it is nearly 99%
> sure we won't have rack mounted units for the servers.  Is this not a
> problem if they can't fit into that distribution centre (which seems
> to be not much larger than a big closet)?  Is there a problem to have
> the servers (full size towers) in another room in the building and
> running cables to the distribution centre? Or will there be some sort
> of bottleneck?
>
> My apologies if this is an obvious thing.
>
> The second question relates to the server setup. Currently we have 12
> computers running on 1 server.  In the future building would it be
> better to set up different k12ltsp servers serving up everything  (IE:
> clones) spread around the building (IE: 1 for school, 1 for daycare, 1
> for youth lounge) or would it be better to have 1 k12ltsp server for
> the whole building, 1 for NFS mount /home, 1 application server for
> the whole building,etc.
>
> Looking forward to your answer
> Joseph
>
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