What you need to know about POS kill

Best of all, if your corporation has active players with different time online. At any time, should be a person who, at least can get a message about the attack and will be able to call for help. If not - you will enter and find the POS in reinforced mode. All that you can do now is to collect his associates for defense. Call your corporation, call your alliance, friends, volunteers ... anyone. You need to ward off enemies and restore POS shield. While the shield is not restored up to the level of 50% and above - you will not be able to get absolutely nothing from hangar, from lab, reactors, etc.

Update: you still can use modules that don’t use CPU. So, you can get ships from ship maintenance array.

This means that if you're not sure that you can promptly detect the attack or to organize a defense, it should be borne in mind the following:

• Use industrial ships for for valuable stuff. You can’t get stuffs from hangar because it use CPU, but if you keep it in ships, it helps you a lot.
• Protection of alliance or large corporation - some guarantee that you can download the materials for the week ahead and go offline. Otherwise - refine and produce in small batches, with the materials for a day or so.

Naturally, than bigger POS, than more it has guns, scramblers, jammers etc., the less attractive target it is and there are less enemies, who can aggress it. Of course a large fleet of dreadnoughts and carriers will destroy any "death star". But it'll take a time.

• It is necessary to collect all at one time
• They need to think about support, scouts and escape routes

In general, it is the whole military operation with questionable benefit. And they have other worries enough.

If the POS was killed, but for some reason they did not finish structures, you still can't get anything from the lab / hangars, etc. While there are not a control tower near - they are locked. They can not be removed from the anchor and pick up, you can not access to their content.

In this case, you  can't install new tower, anchored structures prevent this. So in order to install a new POS you will have to destroy them yourself. Perhaps they was left just for this. Even pilot of industrial ship can run POS in empty place. To run POS in place with structures - you need a fleet of battleships, which will shoot it some hours. Or Dred / Carrier