I've a custom made project started in 2010 in which we have 10 computers in a factory running Ubuntu desktop, installed on a some-kind-of-portable-station-work.
In this time I've had 3 W.D. hard disks broken, in each laptop.
The computers are operating 24/7 and is not usual to shutdown or hibernate. Thus, the computers are moved in a portable-station-network while on.
Do you know any tools or maintenance procedures that should be made in order to minimize these problems?