[K12OSN] New Building's LTSP Server
Joseph Bishay
joseph.bishay at gmail.com
Mon Apr 18 16:29:37 UTC 2011
Hello,
On Mon, Apr 18, 2011 at 9:30 AM, Jeff Siddall <news at siddall.name> wrote:
> Personal opinions:
>
> You are definitely going to need more than 2 GB RAM. CPU seems less
> important. I am running a quad core Phenom II, 8 GB with about 20
> clients total, 10 or so being steadily used.
Is there a link to your specific type of machine so I can learn more
about pricing / specs?
> No performance issues
> except it is easy for the GigE to get saturated if there are clients
> playing video. Video is killer for LTSP. If you don't install flash
> your life will be better :)
Unfortunately as this is an elementary school, as much as I'd love to
not have flash, I know it will be 100% required :)
> I would avoid SCSI drives. Not because they are bad, but because your
> money could probably be better spent elsewhere. Modern SATA drives
> perform great. Also, definitely go with RAID1. Not only will it buy
> you survivability but you get 2X the read performance. Software raid
> works fine. Avoid RAID5. If you can afford it try SSDs. They will
> vastly increase the random IO ability of your system which is especially
> important for LTSP.
Would you say that the much higher cost of SSD and their read/write
lifespan limits are still better than SCSI?
I've been running RAID1 so I'd continue to do that for sure.
> You might be better off building two
> smaller servers for the same price. You might also run into scaling
> issues with file handles and whatnot with a large number of logged-in
> clients. Google for people who ran into that and the resolution they
> found.
I have been thinking about this but this would be entirely new for me
so I'm a bit hesitant. I also need to be able to sync the /home
directories of a small sub-set of users when they log out with another
remote server so I'm not sure if one location has a all-in-one LTSP
server and the other has a different multi-server configuration if it
will easily work or not.
> Localapps for pig apps like Firefox may help save your server performance.
This may be the cleanest solution as 90% of the time people will be
running Firefox.
> Good luck. Please post your findings once you get things up and running.
Will do!
Joseph
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