>>1Forensic IT fag here:
Successful criminals don't store shit on HDDs, they don't store shit on digital media at all (unless they are niggers).
Anyone worth their salt has a notebook that they keep elsewhere that can be easily burnt
That, and when you front door has been kicked in and the trained armed individuals make it to your room within 20 seconds (assuming you are awake and alert) you probably won't have time to destroy anything.
If you wanted to get shit for destroying evidence you could make a thermite (home made) kill switch easily enough, but destroying evidence when being raided probably won't help you.
The catches of having your shit elsewhere:
If you store it with family, they will be raided too and harassed by the police, causing dislike towards you
If you leave it with a friend/girlfriend('s family) they will dislike you
Nobody want to get harassed or be threatened with arrests because of you
Do what any reasonable white gang does, get a mouthy little white guy to be the fall guy, have him be in possession of the proof, pay/protect him and when you get pulled over, he has the drugs/evidence, he takes the fall because he thinks his group are looking after him. More often than not they have their sentences reduced quickly (or they do in the UK at least) if the police know they are the fall guy.