<div dir="ltr">On Mon, Jun 10, 2013 at 9:38 AM, Tony Anderson <span dir="ltr"><<a href="mailto:tony_anderson@usa.net" target="_blank">tony_anderson@usa.net</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
The Trim-slice model H (with room for a 2.5" hard drive) looks like a good candidate for a low power school server (e.g. for running from a 12v battery). The Trim-slice AC adapter delivers 12v@1.5 - a good sign.</blockquote>
<div><br></div><div>Agreed. The ability to power these things from a 'car battery' is critical. I used the term car battery loosely to mean any locally sourced 12v power source. In my limited experience, the cell phone has been a game changer in developing nations. Because of the need/desire to recharge cell phones. Local entrepreneurs have sprung up everywhere to provide the ability to recharge those phones.</div>
<div><br></div><div style>Most of those solutions involve some sort of 12V battery or bank or batteries plus charging system.</div><div style><br></div><div style>Things like UPSs give me pause because they are not as widely available or widely under.</div>
<div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
The Trim-slice also has a SD card slot. This could be valuable because<br>
it would let the device be booted from the SD card and install the XS<br>
via a USB port (USB drive or hard drive) from a tar ball, for example.<br>
<br>
Currently I do the install in two steps: XS and XC.<br>
<br>
The XS install loads XS (or XSCE).<br>
<br>
The XC install (using the usbmount script) installs the<br></div>
content (e.g. Moodle courses, Learn courses, library, internet in a box).<br>
This is also a way to install packages not included in XS such as Django and Mediawiki.<br>
<br>
The first is typically done with a USB drive and the second with an external USB hard drive (content currently exceeds 64GB and should grow significantly this summer).<br>
<br>
Tony<br>
<br>
Using the SD card could give several benefits:<br>
<br>
SD card supports SSH allowing (finally) for headless (in the field) install<br>
<br>
Install XS to hard drive as image eliminating issues with making bootable USB drive<br>
<br>
Install update without repartitioning system and destroying content<br>
<br>
It might also be possible to use the SD card as a 'rescue disk'. Most common case is DHCP does<br>
not init and so no network connection to school server is possible.This would at least allow look at logs to see what went wrong.<br></blockquote><div><br></div><div style>Thanks for the use scenarios. </div><div style>
Dave</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Checking this out is one of my summer projects.<span><font color="#888888"><br>
<br>
Tony<br>
<br>
</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br>David Farning<br>Activity Central: <a href="http://www.activitycentral.com" target="_blank">http://www.activitycentral.com</a>
</div></div>