[K12OSN] New Building's LTSP Server

Steven Santos Steven at simplycircus.com
Mon Apr 18 13:47:03 UTC 2011

Also, think about using your current server again, be it for an app
server, or as a dedicated LTSP server for admin.
Steven Santos
P: 617-527-0667
F: 617-934-1870
E: Steven at SimplyCircus.com

Simply Circus, Inc.
86 Los Angeles Street
Newton, MA 02462

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.  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 :)
> 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.
> When you are all done, spend any leftover money on more RAM.  16 GB is
> definitely not too much.  Even if you don't need it for applications the
> system will use it for cache which will make your server faster.
> One other thing to consider: building one giant server may not be
> adequate.  65 clients is a lot!  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.  Localapps for pig apps like Firefox may help save your server
> performance.
> Good luck.  Please post your findings once you get things up and running.
> Jeff
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