I currently have 14 Raspberry PI desktops with 1 Raspberry PI RACHEL and 1 file server each using a 120gb SSD. I am using a $30 Linksys router from Walmart and I have decided to make static IP’s for each device. I want the person teaching the class to be able to use the VNC program to better assist several students without walking around the class all the time. I can set up other devices in groups and allow access as needed.
When I did my testing at home prior to deployment, I had a couple PI desktops running at least 15 instructional videos, Bino and Fino cartoons as well as pulling up the French Wiki. I did not have any issues during that time. I had also let the server sit idle for a day or 2 and then hit it hard and still no issues in performance.
I plan on adding 8 more desktops in August 2019. I may opt for another RACHEL and separate them via static IPs later. At least for a while, I do not see any immediate issues as I don’t anticipate a heavy load on the server with students looking up information for class assignments.
Our class has been running a couple days a week since January and from what I am hearing there are no issues. When the next school year starts in August, I will have a schedule put together with the faculty and ramp the class up since everyone will be used to the system and re-evaluate the performance and adjust as needed.
My class is all Raspberry PI’s, I like having Linux free software, small image files, a $50 desktop, and low power consumption since the class is 100% solar @ 400 watts (upgrading in Aug) and 960 amp AGM batteries.
With the PI’s being $30 each, I can keep several spares close by in case of failure and minimize the downtime. There are 500 students at the school so I need as many desktops as I can get.