Unless you are going to support hundreds of streams, get the slowest (in terms of RPMs) drives you can. They'll run cooler and suck less power. Don't worry about the absence of TLER. If a raid controller depends on TLER, I'd look for another controller or software. (don't believe everything you read on Wikipedia)
You must have a ton of songs if you are going to use 4TB for data (4 2TB drives raid10 with no spares).
You must have a ton of songs if you are going to use 4TB for data (4 2TB drives raid10 with no spares).