SSD (solid state drive) as a boot drive
MacBook Pro and Mac Pro users should consider using a SSD for the boot drive.
An SSD boot drive frees up all four internal bays of a Mac Pro for data, for speed and reliability via RAID striping or mirroring or internal backup.
On a MacBook Pro, you get high reliability, much perkier performance, silence, and lower power consumption. And there are no heads to crash above 10,000 feet / 3000 meters altitude (I can drive to 12,600 feet in the Sierra, so it’s a real issue).
Buying a Mac? Save money, see Buying a Refurbished Mac. And consult with me first to get just the right system.