[K12OSN] New Server Capacity Thoughts.

James P. Kinney III jkinney at localnetsolutions.com
Sat Jun 7 03:36:27 UTC 2008

Double the RAM. Flash does NOT thread or share a library. Each flash
applet on a page opens a full instance of flash. Yuck!

If possible, put a second drive as a mirror in each server (and use
noatime in the /etc/fstab!). This will have a dramatic impact on
application performance. Be sure to NOT have /tmp in the mirror (it can
be a raid0 striped array).

It won't hurt to also have the /home server use bonded 1Gb NICs.

On Fri, 2008-06-06 at 01:47 -0700, 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
> _______________________________________________
> K12OSN mailing list
> K12OSN at redhat.com
> https://www.redhat.com/mailman/listinfo/k12osn
> For more info see <http://www.k12os.org>
James P. Kinney III          
CEO & Director of Engineering 
Local Net Solutions,LLC                           

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics)
<jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7

This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

More information about the K12OSN mailing list