How to build a large storage network such as RapidShare or MegaUpload?

I want to build a large network, I will start with 50TB will upgrade later on, what storage system do I need and what connection do I need. please provide me with links and Ref. which data centre do you prefer in the UK/Manchester, how many servers and routers, if you have an idea please design me a network.
 
IMO if you don't know what you're doing, then you really can't.
You also have to provide more info; how often are you doing backups...what you're even planning on using this for.
 
how many servers and routers, if you have an idea please design me a network.
hmm; in other words, do your work for you but you get paid for it :lol:
At least you got an idea for the order of magnitude - - mutliple servers and a large network.

You need to do a transactional analysis of every database transaction;
how many accesses and which types {insert, update, delete} of accesses are needed,

multiply by the transactions per second expected yields DB actions per second.

This is almost always 2-3 times any webserver hit counts per second.

If none of the above makes any sense to you, PUNT on the assignment and ask for help from the project leader.
 
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