No. Your application, "backup drive", is exactly one scenario that the Greens were designed for. These are the same drives that WD puts into their various external USB/eSATA enclosures now, which are what most folk buy for backup drives.

Despite the Green being touted as "not high performance" everywhere, the one I have here is the fastest drive in the rather extensive collection of mechanical drives here. I think it's even faster than the 1TB Black drive here. At least for the uses I put it to.

Faster than the 750GB Seagate and Hitachi "performance" drives, too. Speaking of which, I plan to never pay my own money for 3.5" drives from either of those two makers.

Cheers