Board Thread:Questions and Answers/@comment-174.2.129.20-20130114030535/@comment-1863942-20130114173145

Of course there's a solution to this! You can have a massive array of barrels all linked together. Simply place the items you want each barrel to hold. If a barrel becomes full, if there are other empty barrels in the array, the item will proceed to the next empty barrel.

For set ups such as this, I highly recommend using a redpower retriever. It's able to pull items from your tube network based on what is placed on it. Note: Retrievers require blutricity and a redstone pulse to function.