[FEATURE] Memorize last selected storage

Change-Id: I80b9f0f3307afff75e33bc68a28ac43f4e03053c
[FEATURE] Improve last storage selection

Change-Id: I3f8316348af0990b4dc62642be14f528eb02ea29
[CLEANUP] Clean-up comments

Change-Id: Id8c2d6eb98ffda28822c547183f8e578e14374d8