"First, I have to ask why are you not booting and installing over the network for 1000+ PCs"
1) large number of sites - the upgrades were being carried out at the user locations
2) decentralised network - not all the sites had access to the same part of the local NHS COIN, we would have had problems finding a server available to all sites with enough bandwidth
3) because the guys who planned the rollout had limited degrees of freedom of thought and simply "wanted it done that way"........because they considered it more secure. Yes, really, Don't look at me like that......not my decision
In reality you're right - because it was a COIN network we should have been able to find a way, but weren't allowed to. But we've had other cases where it simply isn't possible - e.g. thousands of machines covering all the GP surgeries in an entire county, all on local domains, maybe a couple of hundred. Not something that can be done from a central server -the N3 network isn't fast enough
"I work for the NHS"