[K12OSN] New Server Capacity Thoughts.

Nadav Kavalerchik nadavkav at gmail.com
Fri Jun 6 14:16:56 UTC 2008

we use similar specs for long time (2 years) for about 48 machines that are
not active all the time. and it was enough :-)
Core Duo 1.8GHz + 2 GB RAM + 160 GB HD + 1 Gig NIC + 100/10 Mb NIC

recently we moved (upgraded the cpu and ram) to quad 1.8GHz with 4 GB RAM to
support 70 terminals.
they all run flash 9 on FF 2 + Openoffice + games + some other
smoothly :-)

i will put up some of the sar files we gather for the last year or so from
several servers we have
so you can all explore them :-) (soon)


2008/6/6, Rob Owens <rob.owens at biochemfluidics.com>:
> Personally I would want to have 2 SATA drives in software RAID 1.  But if
> downtime isn't a big deal then a single drive would be ok.  If the system is
> just being used for games, then maybe downtime doesn't matter.  But do you
> think that people will start to use it for more than just games, and come to
> depend on this system?
> -Rob
> Jamie Lists wrote:
>> We're thinking of putting 2 K12ltsp servers in each of our schools.
>> Our home directories are located on other fileservers and mounted via
>> NFS to the LTSP server. The LTSP server will not be doing dhcp / bind
>> / etc etc.
>> Most of our schools have the 2 post telco racks. So we we're thinking
>> of buying the half length SuperMicro cases.
>> http://www.supermicro.com/products/chassis/1U/502/SC502-200.cfm
>> With a SuperMicro motherboard/ 4 gig of ram / a single SATA 7200 RPM
>> hard drive and one Intel Core 2 Duo E6850 Conroe 3.0GHz LGA processor.
>> We're planning on trunking the  1gig nics together as well for a 2 gig
>> connection to the switch.
>> Clients will be assigned a server via DCHP. The DHCP table will have
>> the MAC address of the client and the first choice of server to boot
>> off of then the second and so on and so fourth.
>> Mostly these will run clients at K-5 using flash based games like at
>> funbrain.com.
>> So my question is do you think 50 clients per server is a reasonable
>> expectation?  I guess my main concern is the hard drive being a SATA
>> drive (not the no redundancy part it just not being a SCSI striped
>> RAID setup ) Even though it's not hosting the home directories will it
>> be good enough for launching apps?
>> Thanks - Jamie
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