Review on Seagate Cheetah 15K.7 300 GB SAS 6 Gb/s Internal Bare Drive: High Performance, 15000RPM, 16MB Cache by Chris Hall

Probably the most bulletproof mechanical discs on the planet. I've been using them for over ten years now and I've never had a single failure. Is always. I just bought another batch for a proactive hot-swap group (*) that has been in production for over 5 1/2 years and is suspending SQL and other transaction intensive workloads without a heartbeat. And I only replaced her because of her age. They still worked with no warnings in the logs. (*) Hot-swappable across multiple production RAID arrays with no system downtime. Hot swap a new drive and let the array rebuild. Hot swap another, let the array rebuild. We foam, rinse, repeat until there is a whole bunch of new discs.