<br><font size=2 face="sans-serif">Martin,</font>
<br><font size=2 face="sans-serif">Thanks for the pointer. It appears
the OLPC plan is to have this new XS machine ready by November, but Greg
is working on plan specific to Nepal for this April. Therefore, to
use your terminology, we will plan to use the "XSX" from off-the-shelf
parts to get started.</font>
<br>
<br><font size=2 face="sans-serif">Greg,</font>
<br><font size=2 face="sans-serif">I have made updates (kept your stuff
as comments in case you want to make further updates). I chose "Red
Zone" and "Green Zone" but realize we could probably call
this "Teacher Zone" and "Student Zone" since they are
separate subnets easily distinguishable by IP address. </font>
<br>
<br><font size=2 face="sans-serif">http://wiki.laptop.org/go/Nepal:School_Server_Specification</font>
<br>
<br><font size=2 face="sans-serif">I think Nepal has to have some key decisions
overall which may affect the parameters and settings.</font>
<br>
<br><font size=2 face="sans-serif">Q1 -- Should we (a) have the ISP Modem
connect directly into ONE primary server, and have that be a static IP
accessible to the internet externally, or (b) have a HUB connected to the
ISP Modem, and have all servers be primary on an internal subnet? </font>
<br>
<br><font size=2 face="sans-serif">I can think of pros and cons of each.</font>
<br>
<br><font size=2 face="sans-serif">My preference is (b) with XS2 dedicated
to second graders, XS6 dedicated to sixth graders, but each can run both
grades if the other fails. CRON could be used to send files back
and forth between the two machines for backup purposes.</font>
<br>
<br><font size=2 face="sans-serif">How much control do kids have over which
mesh they connect to? Is it possible that a second grader picks a
circle on the "Neighborhod view" and gets connected to the XS6
system instead? If this happens, perhaps XS6 will detect this is
a second grader, and re-route him over to XS2 server? Or, XS6 can
say "Please select a different mesh" if it detects a second grader
trying to access.</font>
<br>
<br><font size=2 face="sans-serif">Here is where I think some "client
side" logic would be appropriate. For second graders, a file
is installed on their XO that identifies that laptop as belonging to a
second grader, and for sixth graders, a different file is installed. This
could be the "home page" they use to access from the BROWSE activity.
</font>
<br>
<br><font size=2 face="sans-serif">The alternative is that XS2 is the master
Moodle database, file repository, etc. and CRON would send its files to
XS6 nightly. In this case, XS6 is in read-only mode for both classes,
but can be turned into read/write mode if XS2 fails.</font>
<br><font size=2 face="sans-serif"><br>
</font>
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<td><font size=1 color=#0060a0 face="Microsoft Sans Serif"><b>Tony Pearson</b></font><font size=1 face="Microsoft Sans Serif"><br>
Senior Storage Consultant, IBM System Storage™<br>
Telephone: +1 520-799-4309 | tie 321-4309 | Cell: +1 520 990-8669<br>
email: tpearson@us.ibm.com | GSA: http://tucgsa.ibm.com/~tpearson<br>
Blog: http://www.ibm.com/developerworks/blogs/page/InsideSystemStorage
AKA: 990tony Paravane, eightbar specialist </font></table>
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