Cloud storage is a service model in which data is maintained, managed, backed up remotely and made available to users over a network (typically the Internet).
The three components is a specialized video card, large and fast hard drives and specialized audio card.
Nand stands for "not and". The truth table for a nand is:
a b | a nand b
0 0 | 1
0 1 | 1
1 0 | 1
1 1 | 0
Hopefully this helps you answer your question.
