On Tue, Mar 05, 2002 at 03:18:33PM -0500, Julius Szelagiewicz wrote: > Morten, > do yourself a huge favor and look up the K12Ltsp aka K12OS at > <http://www.k12os.org> > they have just what you need; a full distribution based on rh7.2 > and ltsp 3.0 meant for use in the schools! it is awesome! and it works > right out of the box. > as to what you need for server(s), there are 2 schools of thought. > 1 says "many little servers, if one fails, it is not a disaster". school 2 > says "any filure is a disaster to the administrator and one big > "DEPENDABLE" server is better and cheaper than many small ones. both > approches have merit. from my experience with systems big and small i > learned that one server per geographical location works best for high > bandwidth application, everything else is better done on a single big > server. more to a point, i've run single server for 3000+ users with >no< > that is 0 downtime in 1.5 years and i've run setups with 9 servers for 50 > users with lots of downtime. server quality rules. as to the load: a > single 4 processor 1GHz or better with at least 4GB should be adequate > provided that not all 160 users hit various applications at the same time. > i would go for more memory first, more processors second and more speed > third. good luck, and really look up the k12os distribution. julius
Since I might go and offer LTSP to some schools around here, I find your information most valuable Julius. I had a glance at k12linux web site, but I did find it lacking in the security area. I remember that security problem often plagued the administrators at your high school, and many of us students used most of the time hacking/cracking in those labs (not me though). Limiting users cpu load is one problem. Another one is if one user do disk-access-intensive things like: grep -r foo / How do people on this list handle security problems like these with ltsp in, say high-schools? Hans Ekbrand
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