I do the same exact thing but I feel confident with ddg.

Quick question, when harddisks fail, you do you know which one failed? I have two drives in a raid. and they are mapped as sda and sdb. I dont know which drive physically goes to sda and sdb. (I am too lazy to figure out which one is which). But what is done generally to determine which drive has failed physically? DO you just keep track of which drive is which by port its connected to etc.?

Don't want the neighbors stealing our bw!