I run Bitcoin-Qt and Bitcoin Armory on a laptop. I don't have the space to store the whole 20 GB (or however big it is now) blockchain.
I understand the need to run through the entire thing for security, but I'd like it to only store relatively recent blocks + the summarized version (for example, the database of unused outputs / computed ledger). I'd like good security; I just don't have the space to store the whole thing.
Is there some way to configure Bitcoin-Qt / bitcoind to trim its data to a more reasonable size after it's gone through and processed the chain?