Great explanation on JBOD storage that I hope will start seeping into the hearts and minds of the IT community . Convincing a client that they don't need a SAN seems to be an uphill battle at this point and it's good to see some headway finally being made. Guess I shouldn't be surprised ... it's been the status quo for a decade.
The only thing Ill comment on is archiving: I still just don't get it. With this huge push to cheap storage I just don't get the gain over the added complexity of basically asking a user to manage multiple mailboxes (really, thats all archiving does). Cloud angle is an interesting one ... but a monthly fee vs a one time purchase of a few banks of 7500RPM disks ... archiving just feels like an "odd feature" that attempts to fill a demand that has grown from these legacy storage ideas that also spawned file stubs. We don't have 1GB mail limits anymore. We don't need to buy banks of 4 figure fiber drives anymore. We just don't need the complexity that Archive introduces when it's perfectly manageable and cost effective to just throw 25gb at a user and be done with it.
But other than that, fantastic article I will be throwing at lots of clients :)